Good morning, bad day
I don't mind non-con when it's treated as the horrible act it is, but the fact that it's easily forgiven always disgusts me. Otherwise, this would have been a rather sweet, if not a bit odd, collection of stories. The rape is only in the fourth story, though, for those trying to avoid that.
Yoro to Asa no Uta dj - Aru Otoko No Higeki
Graphic extension of the very brutal rape scene in the main story. Hard to look at. Even though that character is a giant asshole for most of the manga, it's still heartbreaking. Definitely not for the faint of heart.
Classmate (ASADA Nemui)
Definitely messed up and sad. Seems to imply that the leader was in love with him all along, but clearly had some serious mental issues. It's so brief and abrupt that it's hard to get into, so it reads as torture porn, essentially. It's just there for the cruelty. I wish they'd done more with the concept instead of just ended it there. Also, this artist clearly has a pee fetish, based on her other work.
Uso Mitai na Hanashi Desu ga H