Love Prism
Other tags: friendship, sports, cute, students, blackmail, trauma, hardcore, protesting uke [didn't enjoy it], ongoing/incomplete (it was left incomplete on a massive cliffhanger due to the mangaka's death. RIP) Note: The uke is in two different "relationships." Most of the negative tags apply to only one of them, the one between the uke and his brother.
Aiyoku Heaven
I decided not to tag this as romance, since we never actually see any, just a mild implication at the end which could have meant other things. Rape, abuse, and S&M could also be tags, but it wasn't between the seme and uke.
Danshiryou no Omocha
Baby Bitch!
[12/29/18] Moved from old "Reading" list. Read first story only (chapters 1-3). Also, near the end of chapter there's a shota reference, I think it happens "off screen" but still, no thank you.
Cherry (ichijou Lemon)
My Quiet Best Friend's Just Tongue-Tied
Hit on By a Kinky Guy
I don't know how how to tag or rate this. This manga is like 2 completely different stories. The first 29 chapters are just about a sociopath raping a guy and doing a bunch of hot BDSM shit to him. The rest of it is his redemption arc about him suddenly becoming a completely different person and falling hard for the guy who was originally his victim, but his feelings are unrequited and eventually I even started feeling bad for him, and currently they somehow ended up becoming consensual FWBs and roommates, and there's now there's drama involving his old friend who he recently reunited with and that person has feelings for him. I have a headache. My 5* rating is for the "2nd story" which is really good (as long as you forget about the fact that he used to be a twisted rapist). I'd rate the "1st story" 5 stars also, if taken separately from the 2nd half of the series. If I'm rating them together as a single story the rating decreases significantly.
Itazurakko no Seifukuron