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Dungeon Diving 304
Ken Nagato has a new way to grow stronger, and the women in his life are lining up to help.
The rest of the world won’t wait for him to catch up. As majority owner of the United Guilds, Ken is now the face of humanity in the dungeon. When the orkai arbiters use his [Eyes of Wisdom] to track the escaped threadspawn, the trail leads to infested dwarven hives, and one of them sits dangerously close to Earth. Ken rallies his class, the elves, and humanity’s strongest guilds for an all-out assault. But what waits at the heart of the hive is stronger than anything they’ve faced, and the price of survival might be more than Ken can afford to pay.
There are smaller problems too. He has a fake relationship with Helen that her mother is very happy to make real. He has a lawyer liaison who won’t back down from Crimson. And his class is throwing a year-end celebration with guests from across the dungeon.
The rest of the world won’t wait for him to catch up. As majority owner of the United Guilds, Ken is now the face of humanity in the dungeon. When the orkai arbiters use his [Eyes of Wisdom] to track the escaped threadspawn, the trail leads to infested dwarven hives, and one of them sits dangerously close to Earth. Ken rallies his class, the elves, and humanity’s strongest guilds for an all-out assault. But what waits at the heart of the hive is stronger than anything they’ve faced, and the price of survival might be more than Ken can afford to pay.
There are smaller problems too. He has a fake relationship with Helen that her mother is very happy to make real. He has a lawyer liaison who won’t back down from Crimson. And his class is throwing a year-end celebration with guests from across the dungeon.
433 pages, Kindle Edition
Published October 8, 2026
About the author
Bruce Sentar
68 books910 followersBorn and raised in the agricultural midwest, I moved every year after school even as far as Shanghai before settling down with my wife in Chicago.
I have always enjoyed Wuxia stories and became thrilled when I discovered harem stories spreading to western books. I've written down my day dreams for years as an idle hobby. Inspired by the harem genre I'm finally fleshing them out into full blown novels.
I'm excited to share my stories with you as I turn them into novels and series.
Connect with me on Facebook for updates on my latest books.
https://www.facebook.com/Bruce-Sentar...
I have always enjoyed Wuxia stories and became thrilled when I discovered harem stories spreading to western books. I've written down my day dreams for years as an idle hobby. Inspired by the harem genre I'm finally fleshing them out into full blown novels.
I'm excited to share my stories with you as I turn them into novels and series.
Connect with me on Facebook for updates on my latest books.
https://www.facebook.com/Bruce-Sentar...
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Community Reviews
Displaying 1 - 30 of 37 reviews
October 18, 2026
There's something impressive about a series being twelve books deep and still having such a clear sense of what makes it entertaining. Dungeon Diving 304 continues to expand the scope of Ken's adventures, but Bruce Sentar hasn't lost sight of the characters, relationships, and ridiculous situations that have made the series so enjoyable in the first place. What started as a relatively straightforward dungeon-crawling academy story has grown into something much bigger, and I appreciate that the increased stakes haven't come at the expense of the series' personality.
The Threadspawn remain one of the more interesting threats Sentar has introduced, bringing a genuinely unsettling element of horror to a world that already has plenty of dangerous creatures. There's a real contrast between the disturbing nature of that conflict and the almost absurd comedy surrounding the academy festival, yet I thought the transition worked remarkably well. Sentar seems perfectly comfortable moving between intense fantasy action and ridiculous interpersonal situations, and that willingness to embrace both extremes has become one of the series' greatest strengths. The lighter moments give the story room to breathe without making the more serious conflicts feel inconsequential.
The relationships are every bit as important to my enjoyment as the action and worldbuilding. This is an unapologetically adult harem fantasy, and Sentar clearly understands that the romantic dynamics, sexual tension, and humor are fundamental to its appeal. What keeps those elements entertaining is that the women have different personalities, motivations, and approaches to their relationships with Ken. Characters like Misha and Helen bring very different energies to the story, and their interactions are often just as enjoyable as the larger adventures. Even as Ken's responsibilities and the supporting cast continue to grow, those personal dynamics remain a major reason to stay invested.
The Threadspawn remain one of the more interesting threats Sentar has introduced, bringing a genuinely unsettling element of horror to a world that already has plenty of dangerous creatures. There's a real contrast between the disturbing nature of that conflict and the almost absurd comedy surrounding the academy festival, yet I thought the transition worked remarkably well. Sentar seems perfectly comfortable moving between intense fantasy action and ridiculous interpersonal situations, and that willingness to embrace both extremes has become one of the series' greatest strengths. The lighter moments give the story room to breathe without making the more serious conflicts feel inconsequential.
The relationships are every bit as important to my enjoyment as the action and worldbuilding. This is an unapologetically adult harem fantasy, and Sentar clearly understands that the romantic dynamics, sexual tension, and humor are fundamental to its appeal. What keeps those elements entertaining is that the women have different personalities, motivations, and approaches to their relationships with Ken. Characters like Misha and Helen bring very different energies to the story, and their interactions are often just as enjoyable as the larger adventures. Even as Ken's responsibilities and the supporting cast continue to grow, those personal dynamics remain a major reason to stay invested.
October 15, 2026
Pretty good book.
Another good book from Bruce.
This one did feel a little more slower, and there were a few points where I was left kinda going “huh that’s an interesting choice or way to go with it” but ultimately pretty solid book.
The few things I’d have questioned in it have been explained enough in and out of the book that I’m expecting it to be resolved in the next one/few.
First is the slower progression and focus on the harem. Slightly too much focus on harem /harem building, not enough on actual plot and deeper story progression, but it’s been setup as you see at the end for hopefully some very decent action and plot progression.
Second was Helen. Ngl I love Bruce’s work but that whole arc has been fumbled a bit, though the recovery is doing its best.
Short of it was, helen got a heap of hate, and Bruce pulled her back. That was a mistake, as the hate wasn’t for Helen herself as a character but with how long, drawn out and aggressive her arc was for joining the Mc harem.
Now she’s finallllllllyyyyy getting some time, and expect her to join in the next book, but it’s a bit rough on writing. Still, glad it’s happening.
Now a few smaller things were in there too, like how little attention was given to Des’s transformation, plus a couple other little things but overall nothing else to be noted.
Solid effort and looking forward to the next one.
Another good book from Bruce.
This one did feel a little more slower, and there were a few points where I was left kinda going “huh that’s an interesting choice or way to go with it” but ultimately pretty solid book.
The few things I’d have questioned in it have been explained enough in and out of the book that I’m expecting it to be resolved in the next one/few.
First is the slower progression and focus on the harem. Slightly too much focus on harem /harem building, not enough on actual plot and deeper story progression, but it’s been setup as you see at the end for hopefully some very decent action and plot progression.
Second was Helen. Ngl I love Bruce’s work but that whole arc has been fumbled a bit, though the recovery is doing its best.
Short of it was, helen got a heap of hate, and Bruce pulled her back. That was a mistake, as the hate wasn’t for Helen herself as a character but with how long, drawn out and aggressive her arc was for joining the Mc harem.
Now she’s finallllllllyyyyy getting some time, and expect her to join in the next book, but it’s a bit rough on writing. Still, glad it’s happening.
Now a few smaller things were in there too, like how little attention was given to Des’s transformation, plus a couple other little things but overall nothing else to be noted.
Solid effort and looking forward to the next one.
October 15, 2026
Boring, incoherent, and nonsensical
This is a prime example of why 98% of haremlit is garbage.
Ken, despite being the most uninteresting man in the world, is somehow a top tier assassin, the head of the most powerful organization on the planet, the object of lust for thirsty women, and the second most powerful person on earth. Or maybe the first. Who cares?
Sentar has steadily thrown more and more women at the Mc to the point where really, while reading you need a color coded chart to track them all. The episodic intrigue between the Mc and the current flavor of the chapter would be better served as being the focus of an entire novel, though even if that were to happen, Sentar would then have the character off to another world to support yet ANOTHER character that the Mc has somehow conned into loving them.
Which makes no sense, because the Mc’s most notable personality feature is, as near as I can tell, ‘being in the same room’ as whichever female character it is that has fallen in love with him.
The power scaling is nonsensical, the rules that the author set out in the earlier books gets tossed to the wayside as soon as the emotional impact wears off, and you’re left with a lackadaisical harem novel, filled with tepid, tired ‘spicy smut’ scenes.
If you as a reader have made it this far into the series… well, don’t. The story is played out, there’s nothing interesting left for this character or story to say.
This is a prime example of why 98% of haremlit is garbage.
Ken, despite being the most uninteresting man in the world, is somehow a top tier assassin, the head of the most powerful organization on the planet, the object of lust for thirsty women, and the second most powerful person on earth. Or maybe the first. Who cares?
Sentar has steadily thrown more and more women at the Mc to the point where really, while reading you need a color coded chart to track them all. The episodic intrigue between the Mc and the current flavor of the chapter would be better served as being the focus of an entire novel, though even if that were to happen, Sentar would then have the character off to another world to support yet ANOTHER character that the Mc has somehow conned into loving them.
Which makes no sense, because the Mc’s most notable personality feature is, as near as I can tell, ‘being in the same room’ as whichever female character it is that has fallen in love with him.
The power scaling is nonsensical, the rules that the author set out in the earlier books gets tossed to the wayside as soon as the emotional impact wears off, and you’re left with a lackadaisical harem novel, filled with tepid, tired ‘spicy smut’ scenes.
If you as a reader have made it this far into the series… well, don’t. The story is played out, there’s nothing interesting left for this character or story to say.
November 6, 2026
At the end of this book, Bruce Sentar invites us to leave a review if we enjoyed it. Previously, he would simply ask for a review, with no strings attached. Perhaps he himself is aware of just how utterly worthless this 12th installment in the "Dungeon Diving" series is.
This twelfth volume spans over 400 pages, yet it is completely hollow—nothing happens. While most authors might include one or two transitional chapters, Bruce Sentar dedicates an entire volume to transition. Not a single narrative thread advances even an iota.
Ken works on his stats and levels, yet the reader never learns the outcome of this "effort"—save for a passing mention or two of a level-up, and a reference to the overall levels of his classmates.
There is a major battle that lasts for a chapter or two, but there is never any mention of the spells Ken uses. And the battle itself just fizzles out into nothing.
My only explanation: Bruce Sentar lost his notes and couldn't be bothered to reread the previous books to provide us with accurate details. (There isn't a single stat sheet in the entire book.)
It’s just a total rip-off. If you have nothing to offer, you shouldn't churn out an empty book just to pad your numbers.
This twelfth volume spans over 400 pages, yet it is completely hollow—nothing happens. While most authors might include one or two transitional chapters, Bruce Sentar dedicates an entire volume to transition. Not a single narrative thread advances even an iota.
Ken works on his stats and levels, yet the reader never learns the outcome of this "effort"—save for a passing mention or two of a level-up, and a reference to the overall levels of his classmates.
There is a major battle that lasts for a chapter or two, but there is never any mention of the spells Ken uses. And the battle itself just fizzles out into nothing.
My only explanation: Bruce Sentar lost his notes and couldn't be bothered to reread the previous books to provide us with accurate details. (There isn't a single stat sheet in the entire book.)
It’s just a total rip-off. If you have nothing to offer, you shouldn't churn out an empty book just to pad your numbers.
October 27, 2026
Great relationship building
This book does a great job of refocusing on the many amazing romantic relationships that this series has. Within some very well written action and otherwise-standard politics, we see the characters personalities mix throughout the book and the evolving relationships remain very engaging.
The growth of humanity and of our characters roles and responsibilities to humanity is handled well, despite not being the focus (yet). I'm looking forward to how this plays out in the future.
The Helen subplot was a bit uncomfortable when spinning up, but was quite nice once it got going. I think the lying part was a bit confusing, but it was thankfully well explained when it mattered.
Overall, I'm very satisfied. This may be my favorite entry in the series so far.
This book does a great job of refocusing on the many amazing romantic relationships that this series has. Within some very well written action and otherwise-standard politics, we see the characters personalities mix throughout the book and the evolving relationships remain very engaging.
The growth of humanity and of our characters roles and responsibilities to humanity is handled well, despite not being the focus (yet). I'm looking forward to how this plays out in the future.
The Helen subplot was a bit uncomfortable when spinning up, but was quite nice once it got going. I think the lying part was a bit confusing, but it was thankfully well explained when it mattered.
Overall, I'm very satisfied. This may be my favorite entry in the series so far.
November 12, 2026
I enjoy this authors writing style. This has a picture of the Whalynn a female who joined their group two books ago but was sort of forgotten during the last book. This book had two potential new love interests but neither joined. I think that when a harem gets big (I believe that it numbers 9 women now with potential of two joining) it is hard to give equal time to each. Sending the two elves back to their land due to the Drow elf problem made sense. This book did a better job at harem maintenance then some in the past. This book ended with wondering what is to happen next. It was also good in this book to show that even though Ken and Crimson are the most powerful humans on earth that there are forces in the dungeon that really powerful and that everyone on earth needs to get stronger.
October 18, 2026
Fun OP dungeon diving
Alternate universe, LitRPG light, leveling, protect Earth, harem adult situations
Ken, his ladies, and classmates finish up their third year, already reaching higher levels than many adult adventurers. Ken is interested in adding Misha, and Helen dances closer while protesting. And the the cliffhanger ending! Excellent editing. Presumably, there will be three, possibly four more books. Having a list of harem members, classmates, and a few notables as part of a reminder wouldn't go amiss.
Alternate universe, LitRPG light, leveling, protect Earth, harem adult situations
Ken, his ladies, and classmates finish up their third year, already reaching higher levels than many adult adventurers. Ken is interested in adding Misha, and Helen dances closer while protesting. And the the cliffhanger ending! Excellent editing. Presumably, there will be three, possibly four more books. Having a list of harem members, classmates, and a few notables as part of a reminder wouldn't go amiss.
October 12, 2026
An evil cliffhanger
Toned down spice to focus on plot was very well done. We know our big bad for the next book and sweet sweet Helen is so close to being fully corrupted, can't wait for her to give in as I know she will be quite...delightful. Till then hopefully Misha gets to enjoy our hero's demonic charms. As for the Demon Tradition, that will definitely be an interesting bit of development as we start the last year.
Toned down spice to focus on plot was very well done. We know our big bad for the next book and sweet sweet Helen is so close to being fully corrupted, can't wait for her to give in as I know she will be quite...delightful. Till then hopefully Misha gets to enjoy our hero's demonic charms. As for the Demon Tradition, that will definitely be an interesting bit of development as we start the last year.
October 15, 2026
Out of control harem
Ken needs to get his ladies on lock, in particularly Des. I know I know, don’t mess with harem politics….but jeeze…a more uninvolved protagonist I’ve never read about? Terrible. I gave it 4 stars because it tied up some on going plot lines, and set more up. But jeez man…get your women under control if you’re going to have that many.
Ken needs to get his ladies on lock, in particularly Des. I know I know, don’t mess with harem politics….but jeeze…a more uninvolved protagonist I’ve never read about? Terrible. I gave it 4 stars because it tied up some on going plot lines, and set more up. But jeez man…get your women under control if you’re going to have that many.
October 18, 2026
The story continues...
And the masterful Bruce still has it. I really tried to stretch this one out and ration it to make it through to the next book. But 5 chapters in I couldn't put it down and devoured the four hundred something pages in a weekend. It's not a small book, it's just that enjoyable.
And the masterful Bruce still has it. I really tried to stretch this one out and ration it to make it through to the next book. But 5 chapters in I couldn't put it down and devoured the four hundred something pages in a weekend. It's not a small book, it's just that enjoyable.
October 20, 2026
This is the author's epic!!!!
Honestly this series just continues to get better and better!! The whole series has been extremely entertaining and not only for the hijinx but for the underlying mystery!!! I can't wait to see what the demons are putting Des and Ken through to help the grow!!! LoL
Honestly this series just continues to get better and better!! The whole series has been extremely entertaining and not only for the hijinx but for the underlying mystery!!! I can't wait to see what the demons are putting Des and Ken through to help the grow!!! LoL
October 23, 2026
Not as good as the earlier books
I don't know what's going on in the first half of this book, but it's total filler, very little happens to progress the plot, Hayley becomes suicidally annoying, annoying to readers though, not just her class mates.
It does improve in the second half at least.
I don't know what's going on in the first half of this book, but it's total filler, very little happens to progress the plot, Hayley becomes suicidally annoying, annoying to readers though, not just her class mates.
It does improve in the second half at least.
November 2, 2026
Absolutely awesome series
Will hate when this series ends, which hopefully won't happen for several more books. The characters are amazing - so full of energy and life. The background story is big enough for numerous story threads, but not so large as to be overwhelming. Masterful job of writing!
Will hate when this series ends, which hopefully won't happen for several more books. The characters are amazing - so full of energy and life. The background story is big enough for numerous story threads, but not so large as to be overwhelming. Masterful job of writing!
November 12, 2026
Oh my God very
This was really great. It kept changing all the way through and getting better and better. The characters are changing and the story is changing this is truly a great effort by the author. It sounds how seems rewarding in an unexpected way. Kudos Bruce. Definitely facing forward and onward
This was really great. It kept changing all the way through and getting better and better. The characters are changing and the story is changing this is truly a great effort by the author. It sounds how seems rewarding in an unexpected way. Kudos Bruce. Definitely facing forward and onward
October 10, 2026
dungeon 304 = A+ grade
the story continues, this is my second favorite series to ards, but only one now active. Bruce keep up the story still really enjoying it. between the demons and the nekko homeworld I can't wait for those two story lines to move forward.
the story continues, this is my second favorite series to ards, but only one now active. Bruce keep up the story still really enjoying it. between the demons and the nekko homeworld I can't wait for those two story lines to move forward.
October 15, 2026
Decent
The ongoing with UG was silly. I think it could have been handled way better. Its good we are seeing some growth from Helen because she was being a pain. Its good we are about tonsee some heavy growth from Len because he is going to need it.
The ongoing with UG was silly. I think it could have been handled way better. Its good we are seeing some growth from Helen because she was being a pain. Its good we are about tonsee some heavy growth from Len because he is going to need it.
October 17, 2026
Boring
I got about half way through this book and stopped. It feels like the plot has been reduced to a dating/harem simulator. How did a book about a massive dungeon connecting different worlds, become so boring?
I got about half way through this book and stopped. It feels like the plot has been reduced to a dating/harem simulator. How did a book about a massive dungeon connecting different worlds, become so boring?
October 22, 2026
Fun Tale
Fun story with interesting characters.
Consistent rules, characters who grow and good plot lines. Fun Easter Eggs and shout outs to other fantasy and historical moments.
Highly Recommend 10 out of 10!
Fun story with interesting characters.
Consistent rules, characters who grow and good plot lines. Fun Easter Eggs and shout outs to other fantasy and historical moments.
Highly Recommend 10 out of 10!
October 22, 2026
This was fun reading
This series just gets better and better but for sure they are all moving along and showing deeper feelings and understanding of each other. I do feel some of it was a bit rushed in places but still very good.
This series just gets better and better but for sure they are all moving along and showing deeper feelings and understanding of each other. I do feel some of it was a bit rushed in places but still very good.
October 23, 2026
Another enjoyable book
Another great addition to this fantastic series. Really enjoyed the character building for the characters, especially Ken. I noticed a couple of grammar errors, but nothing really detracting. Really looking forward to more in the series.
Another great addition to this fantastic series. Really enjoyed the character building for the characters, especially Ken. I noticed a couple of grammar errors, but nothing really detracting. Really looking forward to more in the series.
October 23, 2026
A wonderful addition
If you enjoyed the previous books in the series you're going to like this. Solid throughout wasn't bored once. Not going to give plot points I don't want to ruin anything for you.
If you enjoyed the previous books in the series you're going to like this. Solid throughout wasn't bored once. Not going to give plot points I don't want to ruin anything for you.
October 27, 2026
Another awesome sequel.
I really enjoyed reading this book. It was fun and engaging. The story and characters were incredibly interesting and entertaining. I'm looking forward to seeing what happens next. This book and series are definitely worth checking out.
I really enjoyed reading this book. It was fun and engaging. The story and characters were incredibly interesting and entertaining. I'm looking forward to seeing what happens next. This book and series are definitely worth checking out.
October 10, 2026
Another great installment
Another great book. Keep them coming. I really hope this series goes until we find out what is through the door at the bottom of the dungeon.
Another great book. Keep them coming. I really hope this series goes until we find out what is through the door at the bottom of the dungeon.
October 12, 2026
Ken in the demon realm
I do hope the Ken will be able to withstand what is comingwith his training in the demon realm. It should be epic
I do hope the Ken will be able to withstand what is comingwith his training in the demon realm. It should be epic
October 12, 2026
Dungeon Diving is the best!
All of the Dungeon Diving 101 books are incredible, always something new! Great story, cool characters, awesome book! I can’t wait for the next one!
All of the Dungeon Diving 101 books are incredible, always something new! Great story, cool characters, awesome book! I can’t wait for the next one!
October 16, 2026
Another great book in the series
Dungeon Diving 304 is another great book in the series. Ken and crew are in more trouble and into more fun. I can't wait for 401.
Dungeon Diving 304 is another great book in the series. Ken and crew are in more trouble and into more fun. I can't wait for 401.
October 16, 2026
I love the series and I'm looking forward to the next book.
October 17, 2026
Always a fun read
This was definitely a fun one. Not too fast paced and a good transition story for what's to come. As always the wait will be too long I'm sure.
This was definitely a fun one. Not too fast paced and a good transition story for what's to come. As always the wait will be too long I'm sure.
October 18, 2026
Good book
I don't know where to start ,it was a very exciting book ,and the demons are going to up his game in a whole new level and I hope grandpa gets his demon grandma lol 😆
I don't know where to start ,it was a very exciting book ,and the demons are going to up his game in a whole new level and I hope grandpa gets his demon grandma lol 😆
October 18, 2026
Fanfreakingtastic!
What an amazing book! I absolutely loved this book and such wonderful characters! I can not wait for the next book to come out!
What an amazing book! I absolutely loved this book and such wonderful characters! I can not wait for the next book to come out!
Displaying 1 - 30 of 37 reviews