I've read Koikimo and After the Rain.
I really enjoy this type of age-gap romcom.
I'd like for more recommendations.
It can be Hetero, yuri or/and yaoi.
I'm looking for the really dark stuff. It can even go to the level of gore-ish.
It can have all of the worst tags such as: kidnapping, r*pe, violence, etc...
I've read: Killing Stalking, Sadistic Beauty (side story), Warehouse, Black Mirror, In These Words, and all of Harada's work.
I want to read more! Thank you in advance! ლ(´ڡ`ლ)