Sakaguchi is in a sexual relationship with his step father that is abusive, but he enjoys the pain b...
TW : SELF HARM. For real, it's very triggering. The MC deals with SH in a realistic way tho. Which is refreshing for manga.
This one definitely qualifies in my opinion. It's pretty dark, and deals with a lot of tough issues. The relationship between the uke and his "dad" could be perceived as dub-con, but when taken into consideration of : how it started, their ages, and how it ended, i'd say that calling it flat out rape is the proper term. The seme and seme handle each others trauma great.