Piano Lesson (kotobuki Taroko)
Hard to follow. Not sure about this.
Sukijanaitte Hyakkai Tonaeta
With the former host alpha that ends up bottoming for the first time (to an author he idolizes) and gets addicted to it. Author's kiiiiiinda messed up and big time into BDSM but they end up together in the end (though there isn't nearly enough of their story after the big sex scenes).
Itou-san (KURAKA Sui)
Really good but tough continuation of "Episode 0". Twisted and dark about a programmed assassin and the boy who wakes him up from his programming. HEA! It IS an HEA. Weird and twisted side story of a teacher/student that just... no. That doesn't even factor in. It just doesn't exist. :P Last chapter is a parallel world with Ito and Kyousuke where they are teacher and student and end up together. OMG I don't believe I didn't update this after the last two chapters. Wow, this is AMAZING. The last two chapters are just incredible and I just can't get over how happy they are together in the end. Wonderful!
I: Episode 0
See "Itou-san". This is part 1.
Double Face
Abused son and bastard son of a rich guy. They start out with sex and end up staying together. :)
Ienai Itami o Daite Iru
Half brothers. Older gets into fights and beaten up a lot because his younger brother takes care of him. Since he is in love with the younger, he does it to get close. They do end up together. The older one feels like he's dragged his younger brother down a really dark path.
Deichuu no Hasu
Another tough read. It's dark and a bit twisted in some ways, but I am not convinced the older brother really DID manipulate him into what he did. He could have been saying that to get the other guy away. I think it's possible that there was more playing off each other than one's specific manipulations. I like to think of it as a happy ending, myself, that they're together and happy with each other, finally accepting that there's romantic love for each other.
Cut
Really rough story about two boys with really bad pasts. One's mother tried to kill him, the other's father died in a car accident and participates in self-harm to deal with it. HEA, though.
Sex Therapist