Pet Shops La Crosse, Wi What's A Good Manga Like Pet Shop Of Horrors?

What's a good manga like Pet Shop of Horrors? - pet shops la crosse, wi

Does anyone know an interesting manga that is similar to Pet Shop of Horrors? I just read volume 10, and was after fangirl-Ing was my first thought: "Well, what should I do?"
I read:
Death Note
Bleach
Fullmetal Alchemist
D. Gray Man
La Corda D'Oro
Beauty is the Beast
Lovely Complex
Hellsing
Card Captor Sakura
And I do not remember.