Disappointed because the art for this one was lovely. But the story was a mess.
It started out with promise: I liked the older characters (30s with facial scruff) and the overall premise of a no strings attached arrangement helping a brokenhearted dentist get over his first love.
Kurusu is a wealthy man with a sweet tooth and a lot of responsibilities. His dad's in the hospital, which means he needs to temporarily take his spot as head of the family business. It's frustrating because no one takes him seriously; they brush his ideas aside, saying that his dad will be back soon and he's just a figurehead.
In the midst of all this, he bumps into a handsome, teary-eyed guy, Nao, who's just found out the man he was in love with (an old schoolmate and past lover) is getting married. After the second encounter, Kurusu decides that it might be fate and propositions him. They start out with a one night stand - Nao's first time with anyone since he last slept with his senpai - and while Kurusu is gentle and attentive throughout, Nao cries at the end and calls out for his senpai. In the morning, he's gone before Kurusu wakes up.
Kurusu was genuinely interested in him and is sad they didn't exchange numbers - but they meet for a third time when it turns out that Nao is the dentist he's just made an appointment with. So Kurusu proposes another arrangement. He'll go in for six weeks of tooth whitening treatment (since even though he never goes to the dentist, his teeth are otherwise in perfect condition) and will sleep with Nao each of those days. Then their arrangement will end. Except Kurusu has never actually wanted it to be temporary, and Nao is catching feelings, too.
This all sounds interesting, right? But it's badly written.
I don't know if the translation is part of the problem; it's incredibly clunky dialogue and unwieldy narrative, which at first I thought meant they rushed this one out with a subpar editor. But judging from the author's note, where they said they had to tone down Kurusu's long rambling speeches, it's probably just the original writing style.
As for the other parts...Kurusu's dad is in the hospital for a broken bone from golfing, and he decided to stay in for longer, while he was at it, to get a full body checkup. There's no indication he actually had any serious illnesses. How long exactly does a physical exam and an array of tests take? It's no wonder the others at their company just wanted to wait for their actual company president to come back, instead of letting his son change all their policies and structure in the meantime?
Nao's situation also didn't really hold together. His situation with his senpai is called "unrequited love" in the summary, but that's a bit misleading. I got the impression that it was a really close friend from school whom he'd been pining after, etc. But in reality it seems like he didn't actually know the guy that well; there are no backstory bits that show a real bond between the two of them. The senpai just found out that Nao was gay, expressed his curiosity, and slept with him for an unidentified amount of time before getting annoyed that Nao was taking their "relationship" seriously.
There's also discussion later about the guy tying Nao up during sex, bruising him in the process, and how Nao thinks all relationships between men are like this. Which is why he was so surprised by Kurusu being gentle in both bed and on their dates, treating him "like a woman." All of these internalized issues could've been interesting to explore, but they weren't, at all. Just dropped into the narrative and left to fester.
The senpai also shows up during this six week timeframe to ask Nao if they can continue having sex because he doesn't really like his wife - pretty much an arranged marriage for business reasons. Nao turns him down, which could be a great character moment, except I don't get what Nao ever saw in him at all. Plus, there was the whole deal where part of why Nao was interested in Kurusu to begin with was that they looked so much alike...which they did not, at all.
So the senpai ex was a little bit pointless. That's fine, he was a jerk, Nao is learning what actual relationships can be like, we're moving on. But then we get this misunderstanding where Nao's coworker sees Kurusu with a "wife and child" and Nao is convinced that he's been sleeping with a married man.
And he plans to continue doing so until the end of their arrangement. He struggles some with it (but not enough), being sad that he's going to be hurt again, etc, and decides that he should talk to Kurusu. But he also thinks that it's not a really big deal anyway since they only had a temporary arrangement, and it doesn't particularly matter if Kurusu was married and cheating on his wife.
Excuse me? It matters a whole lot.
This is the point where, regardless of the rest of the messy storytelling, I was pretty much done. Infidelity being treated that casually is an absolute no. It ultimately just got laughed off because it was, of course, Kurusu's sister and her child, but Nao still didn't care that much about having slept with a guy he'd thought was married?
And as nicely as Kurusu was treating Nao, they never really bonded in any particular way. Nao doesn't tell him about meeting up with his senpai - which I get was him being independent and not needing to talk about - but they don't really talk about anything serious. Kurusu doesn't share his worries about work or family. Nao doesn't tell Kurusu anything really important. They go out on dates, but do they even know or like each other as people?
This is apparently a two volume spin-off of another one-shot about Kurusu's brother - who has a faceless appearance at the hospital-with-sister scene - but I don't really care enough to bother reading either of those two. Wish the pretty art had come with a better story.