Dark yaoi

Smut
Psychological
Rape
Confinement
Twisted

Vampire uke
Possessive seme
Persistent seme

Doujinshi
Manipulation
Psychological
Crazy seme
Rape
Twisted seme
Confinement

Twisted seme
Manipulative seme
Possessive seme
Uke kinda twisted too
Doujinshi
Yaoi

It's one of those which revolves more on smut than plot but it's dark so it deserves to be here
Hardcore smut
Pseudo incest
Father in law x son in law
Manipulative seme
Older seme
Obsessive seme

Violence
Yandere
Seriously deranged
Hardcore smut
Blood and a bit gore
Possessive lover
Confinement

It's not so dark but I don't know where to put it. Anyway it has cheating so it counts
Smut
Onsen
Relationships
Cheatingggg

Prostitution
Sex worker
Historical setting
Possessive lover