Ngl I liked the main story more than the first one, cause the nape fetish guy really did seem like he only cared for him for his nape. I also don't like how the other guy justified it as his nape being a part of him so it must mean that he likes him as a whole, when in reality that's totally not true cause nowhere in the story does his partner try to be even a bit more interested to him as a person at all.
Then the main story. It was fucking adorable, but it was more of a friends to not-really-lovers-but-a-vague-relationship. I mean Kawashima straight up said that he *has* to return Sayama's feelings which just throws off their relationship even more lol. I do think he has genuine feelings for Sayama, but the story we saw was basically just the very start of their blooming relationship (or fall, idk).
Saiaku no Jinsei