Despite the happy ending and the fact it was, for the most part, a true slice of life, I found this story far more heartbreaking than I was expecting. Like mtmt1311 pointed out, it's hard to just overlook what Nishina did in the past, not only because one should always take resposability for their actions, that's a no brainer (plus, what he did to Miyama was seriously damaging, as we saw), but also due to the way he acts as his current self. He didn't care enough to look for Miyama after their graduation, he didn't care enough to leave the wife he didn't love, he might have been scared of loniless (most of us are) but he could also be a tremendous jerk. And then he may just be frightened of not being normal. To the very end, this ambiguity of intentions lingers, but that's hardly a flaw.
As far as we're talking fiction, I think it's fair to say Nishina behaved like a darn real highschooler. He loves the attention Miyama gives him - it empowers him, and he grows conceited enough to trick the poor boy into confessing his real feelings for him. Then things start to develop a lot faster, and because he's far weaker than Miyama, the one who never cared and never will, he can't refuse him. It scares him so much he leaves. Weak, weak, weak. The fact that his feelings for Miyama rekindled would have been more convincing if he didn't say, so bluntly, he totally forgot all about him. I feel sorry for Miyama, and on that alone I don't think Nishina should have gone to his cafe after he learned the truth.
I'm glad he did though. I liked this very much. I don't usually like it when the characters can't come clean with their feelings for each other (and no matter what Nishina said, his actions tend to go against his words), but I did like Nishina. He is a nihilist who totally lacks passion in his life, but when it came to Miyama he sure was lustful. I think it makes for an interesting case, even though they are probably far from being the perfect healthy couple. Miyama's obsession for Nishina is also very intriguing. Perhaps he felt attracted to that nonchalant-lustful side of him too, or maybe it was something else that I completely missed, fufufu. I did feel for him though, especially when--
near graduation he goes to Nishina and starts talking about the arrangements of their future life together. So sweet <3
Visually speaking he reminded me of Neil from Shingakkou - Noli Me Tangere, who I love, so every time a close-up came up I would squeal like a fangirl. It was nice, ahah.
I wish there was more to this couple. And I loved, loved, loved the art and the fact that they were a reversal couple. I'm totally addicted, ahah. Can't wait to read more from this author!