First Book: Kuroneko Kareshi no Asobikata || Crossover: Nekoka Kareshi No Ayashikata
Second Book: Kuroneko Kareshi no Amaekata
Third Book: Kuroneko Kareshi no Nakasekata
Fourth Book: Kuroneko Kareshi no Aishikata
Fifth Book: Fukigen kareshi no Nadamekata
Sixth Book: Kuroneko Kareshi no Afurekate
Seventh Book: Kuroneko to Kareshi to Ouji
Eighth Book: Fukigen kareshi no Saraikata
I copy pasted a commment to get the order right,I don't think that it's THE smuttiest but you won't be disappointed
Can anyone tell me the most smuttiest manga you ever read, it can be anthing ( Yaoi, Yuri, and Shounen)