Sensei, Kowai Hanashi Shimasenka?
The plot is probably amazing, but my brain can't comprehend it. I don't understand a single thing. What happened? All I noticed was rape, some book, sex, then some tree ghost, a body under a tree, and more sex. There's a killer who was obsessed with his sister... and then more sex. That's all. I have no idea what the heck is going on, but the sex scenes are hot, I guess.
Samenai Yume
I love this so much. It has elements of necrophilia (well, not entirely) and incest.
Cupid ni Rakurai
Rojiura Pussycat
Camellia
This is so good HUHUHU. Unfortunately, the author dropped this. But based on the spoiler (since the author already said that this will have an unhappy ending), according to one of the comments below, the Father/Natsuki died and Hyou committed suicide HUHUHU, while Setsu became a lawyer, but he didn't end up with anyone. SHITTTTT, this is so sad.
Butterflies don't dance near poisonous flowers
Window to Window