In the Warui Otoko series:
V.1 - Shihai
V.2 - Joushi
V.3 - Chijoku
V.4-6 - Nitta
Licensed Volumes:
Warui Otoko Noki no Ame no Yuuwaku: Bad Boy -Seduction Under the Rainy Eaves-
Warui Otoko Shinju wo Chirasu Yoru: Bad Boy -Night of the Scattered Pearls-