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Itou just wants to make friends, but she’s a socially awkward girl who gets called a monster behind her back. If only she were more like Takahashi! That girl is totally ordinary, gets along with everyone, and…eats people?! In a gruesome turn of events, Itou discovers that her classmate Takahashi is actually a monster who’s learned to blend in perfectly with humans. Starstruck, Itou asks to be friends, and Takahashi starts teaching her how to act normal. But what does it really mean to be “normal”? And what is Takahashi truly after…?!

208 pages, Paperback

Published August 26, 2025

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Warugi Wanai

8 books1 follower

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5 stars
50 (28%)
4 stars
74 (42%)
3 stars
45 (25%)
2 stars
6 (3%)
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1 (<1%)
Displaying 1 - 30 of 33 reviews
Profile Image for Dara.
147 reviews10 followers
January 17, 2026
4,5 rounded to 5

It is a very interesting first volume, with a grotesque, but funny plot. Our main characters, Takahashi and Itou, are the opposite of normal (each in their respective ways), but one is a master of masking it, and the other would like to learn how to be normal. Without spoiling, all I can say is that Common-Sense Monster is a good yuri to pick up if you are craving a horror story with plot twists, as well as intriguing discussions on “normality”!
Profile Image for Heather’s Reading Bubble.
465 reviews1 follower
September 7, 2025
As I am trying to read as much GL manga as I can. I feel like I’ve been neglecting GL. It wasn’t my intention it just happened.

Anyways back to common sense monster. I find the premise of this story to be truly fascinating. The execution however is extremely rushed. A lot happens in this volume it’s almost 200 pages. I found out this series is 3 volumes and the pacing now makes sense.

I can definitely identify with Itou as I once was a teenage girl that didn’t quite fit in, no one called me a monster but I get the feeling of being isolated and latching onto the first person that gave me a hint of attention, sure the person was a person not a monster but still. I found the ending to be very enjoyable and can’t wait to see what decision Itou makes.

My only gripe besides the pacing was the art. It distracted me several times and not in a good way.
Profile Image for Jessica.
93 reviews3 followers
October 16, 2026
rating for all 3 volumes

was really enjoying the dynamic of a monster teaching a human how to be human, but I'm not sure if this manga got axed or something but the last couple of chapters were rushed and didn't feel like it was meant to be the final arc which unfortunately prevents this from reaching its potential
Profile Image for Aurakinski.
346 reviews7 followers
August 17, 2026
It's... Something? I'm not sure if good weird or bad weird yet. It reminded me a bit of The Summer Hikaru Died, which is the good part of the weirdness. Don't know about the characters and the way they're developing... Gonna read the next volume.
1,545 reviews
September 28, 2025
3.5

Okay this one is a bit controversial for me personally. I like it, but later on I dislike it to some extent. Why?
Well the overall premise is interesting and if you enjoy The Summer Hikaru Died or This Monster Wants to Eat Me, then this one might be up your ally. Due to the similar vibes with those seires I enjoyed this. I also liked the fact that Itou could be viewed as being neurodivergent due to her difficulties fitting in with the crowd (simplified explanation). It might be my neurodivergent brain seeing it like that, but I could relate to a few things in this series.
That said.... by the end of this volume something unexpected happens, the premise was cool, but the chat Itou ends up having with a certain someone is less cool. Why? If you see Itou as a neurodivergent or even just as an excentric person, then by the end you're ending up with a narrative painting neurodivergent people or just excentrics or how to put it as monsters and a possible threat to society/humans. Just because we don't conform to the "golden" standards set by society. I'm sorry, I hope this is not where the story is going... Because if it is, then this series is some BS in a world where outliers/minorities are already being harrassed for just living their lives without posing a threat to anyone.
So dear author I really hope this is a story about how someone different is not that much different after all even if they may be a bit excentric or something of an outlier. That's my main gripe with this one. Otherwise it's a decent read and I will give vol. 2 a shot whenever it comes out, praying I'll be wrong about my current vibes of the series due to that ending.
Profile Image for Justin.
925 reviews14 followers
November 20, 2025
So, apparently stories about melancholy/doomed relationships between regular people and monsters are kind of my jam. Harem comedies in this genre, like Today's Cerberus and My Monster Secret can be fun for awhile, but the ones that really resonate with me are the series that let the monsters be, well...monstrous. The Elder Sister-Like One does a decent job of that, but nothing like Common-Sense Monster.

Itou is a social outcast. She'd like to have friends, and a normal school life, but she just doesn't know how--and her attempts invariably fail spectacularly, and just make things even more awkward between her and everyone around her. And then she stumbles upon one of her classmates eating her teacher.

Takahashi is a monster pretending to be human, which had been going swimmingly until Itou bumbled into her most recent feeding. But she's thrown off balance when Itou doesn't scream, or run, or try to fight, but instead asks for Takahashi's help.

See, Itou is legitimately weird, and in witnessing Takahashi devouring another human being and (almost) not being found out, she realizes in an instant that even this inhuman thing is somehow better at passing as normal than Itou is. And if a man-eating abomination can pull that off, Itou thinks Takahashi can teach her how, too. She's desperate to believe that's true, in fact.

Thus begins a tentative relationship filled with misunderstandings, false assumptions, and some very dark turns. And I am 100% here for it, because if this volume is any measure, Common-Sense Monster is this formula done oh, so very right.

The characters here are distinctive, alive, and engagingly complex. Even the seemingly straightforward life of "blend in, eat, move on" that Takahashi lives has an impressive amount of nuance to it. And Itou is obsessed with the idea of finally being seen as "normal," to the point of self-destruction. These are not happy people, but they're damn interesting, and they serve as quite the commentary on society: the pros and cons of both fitting in and standing apart from the crowd; how you might never really know what's going on with people you see every day; how much of a say you even have in your own identity, vs. what society decides to treat you as; etc. There's an awful lot to unpack, just in this first volume alone.

I am very, very much looking forward to seeing where this series goes from here.
Profile Image for Piper KM.
8 reviews1 follower
September 12, 2026
I originally read this online and liked it so much I had to get the physical copy. The story is so unique, and the characters are so endearing. There is a good contrast between the quirky characters, their goofy expressions, and the unsettling art style, which never lets you get too comfortable within the story. Tension is built between the artist, the story, and the characters, all pulling the mood in a different direction to create a funny, creepy, and cute story. The Yuri is minimal, but I would still recommend it for Yuri fans who enjoy stories about girls with essentially no male characters. The translation is a little rough in terms of the sound effects, with the original Japanese still on the page and then the translations kind of awkwardly sprinkled around. It doesn’t impact readability though, it’s more of a slight annoyance. I hope for more yuri in the following volumes!
Profile Image for Lia.
3 reviews
November 5, 2025
Itou, a socially awkward teenager, is jealous of Takahashi, a kind, unassuming classmate who gets along with everyone. Her life changes one day when she witnesses Takahashi devouring someone whole. It turns out the girl is actually a monster-and one who can blend into humans! In awe of her, Itou longs to be her friend. She begins learning how to act "normally" from Takahashi, but will Itou succeed? Takahashi's true goal?

The following is going to make someone mad: I liked it, but I hated it at the same time. There is an interesting premise to the story. However, the pacing felt uneven, with some scenes dragging on while others rushed through crucial developments. Additionally, the character development was lacking, as I wanted more depth and background for both Itou and Takahashi. The ending also left several questions unanswered, leaving me feeling unsatisfied.

The story had potential, but the execution fell short. Some plot points felt unresolved, and the characters' emotional depth was underdeveloped. Despite its flaws, the unique concept kept me engaged, but I couldn't shake the feeling that it could have been much better with tighter storytelling and more nuanced character arcs.

Should I continue reading the next volume? This is the thing, I want to continue, but at the same time, I have no interest in this manga. In summary, while the story's unique premise held promise, its uneven pacing, underdeveloped characters, and unresolved plot points left much to be desired.
This entire review has been hidden because of spoilers.
Profile Image for grace.
25 reviews
February 19, 2026
the idea behind the story was very interesting: a girl who struggles with socializing discovers that one of her more popular classmates is a monster who eats people. the unsociable girl asks for the monster's help in learning how to be "normal" since she seems so good at fitting in with others! the plot felt a little slow sometimes and had some triggering themes, but it didn't bother me too much. i'm curious to see how the story evolves in volume 2
52 reviews
September 29, 2026
Fresh off The Summer Hikaru Died, I bumped into this one and the premise seemed likewise intriguing. While the artwork is a bit rough in patches and CSM doesn't quite reach Hikaru's levels of dread, I found it enjoyable for depicting a divergent person's approach to monsters and impostors which is something I can well empathize with, having been interested in monstrous creatures all my life and having lived with an all-too human impostor.
Profile Image for chewy chewington.
18 reviews
October 30, 2025
full of twists and turns with tastefully horrific art. this volume is 10 and a half chapters long! both of the leads are interesting. i’d say the horror art is the highlight, and i enjoy how ‘sketchy’ the art can look. i can imagine myself recommending this to my friends! ^^
Profile Image for Jess.
2,440 reviews80 followers
January 14, 2026
What a delight. Gory and funny, with a focus on friendship and the pros and cons of fitting in. I see some of the tags are calling this queer and, I don't know, maybe down the line there will be a romance element, but as of this volume it's yuri of the "girls who are friends" variety.
Profile Image for Cassandra.
3,615 reviews33 followers
February 3, 2026
A lot of hmmmm. Interesting story but the way it is told feels confusing, when I was reading that things could have been switched around to make it flow better. The art felt like a lot of just black.
Profile Image for mari.
56 reviews1 follower
February 24, 2026
lesbians can never just be normal they gotta befriend mfers who say they're gonna kill them
77 reviews
March 15, 2026
Love the exploration of 'normal' and how unnatural it comes to some people. Art is well done.
Profile Image for Richard Humphries.
Author 6 books16 followers
April 27, 2026
gets high points for tackling what is “normal” in a rather fresh way.
Profile Image for Heather.
1,629 reviews18 followers
September 2, 2026
This is not for me. I enjoyed the artwork and the idea of the story, but the execution left me feeling kinda 'meh' about it all.
Profile Image for Carl Weezer.
42 reviews
September 11, 2026
hope to write a proper review someday -Is our protagonist Nuerodivergent-coded?? Because that's what really makes this book fun for me personally to read
Profile Image for Chloe.
47 reviews1 follower
September 15, 2026
Dune worm girl
This entire review has been hidden because of spoilers.
Profile Image for ⋆˚₊dora.
207 reviews
January 25, 2026
3.75 ⭐️ i absolutely LOVEEE the art style, the ways it depicts characters emotions (beautiful or “ugly”; good or evil) resembling their conversations is genius!
21 reviews
November 24, 2025
*Main couple are both female.
*No noticeable cursing, Takahashi is shown in her underwear at the start and the teacher is implied to have sexually assaulted her/attempted to, but nothing explicit is shown.
*Monsters, mild gore, blood, threatening suicide.
*Toxic friendship, threatening to eat the other, common in the genre.

+ Artstyle captures the themes of the manga amazingly well. Can switch between cute/creepy while feeling consistent. One of the better yuri-monster mangas. Especially at the beginning, Itou does read as incredibly socially awkward, someone who really would need to be 'taught' to be normal. Takahashi's approach to humanity does feel rather monstrous but near the end we start to see more of the 'real' her, flaws and all.

-Itou's motivation to be normal is a little unclear. Her grandmother seems like a tough love character who accepts her own 'abnormality' as well as Itou's.

Displaying 1 - 30 of 33 reviews