Original Story and Spin-Offs

Volume 4, Koi Ja nai Kedo "It Isn't Love" in Sakuragi Mei's extensive Warui series. Primary couple: Yukimura Shuji, Student Council Vice President x Shinonome Ryuuichi, delinquent.

Short stories, Warui Koto Bakkashite Gomen Nasai "Sorry for Doing Naughty Deeds" that are corollary to Sakuragi Mei's extensive Warui series.

Volume 5: Warui Yatsu Demo Ii "Is Even a Naughty Boy Good?" in Sakuragi Mei's extensive Warui series. Primary couple: Mikado Shirohane, Student Council President x Towa Aikawa, delinquent. Continuation.

Volume 6: Mujihi na Otoko "Merciless Man" . Isolated at college by rumours of his invincible homosexual magnetism, Nanao Shirahane is irresistibly drawn to Kuon Aikawa, another student whose nature is to fiercely attach to a partner and who, thus, despises Nanao, even when he starts to notice that Nanao's behaviour doesn't correspond with the person he is said to be. Mix in a professor who uses Nanao's loneliness, the result of those rumours, to advance his own agenda.

Volume 7: Warui Koibito ja Dame? "Can a Naughty Boy be a Lover?" in Sakuragi Mei's extensive Warui Series. Variety of couples, but primarily Mikado Shirohane and Towa Aikawa.

Volume 8: Kare ja nai kedo and Warui ko Tachi no Bansan "I'm Not Your Boyfriend" in Sakuragi Mei's extensive Warui series, and sequel to Koi ja nai Kedo. Primary couple: Yukimura Shuji and Ryuuichi Shinonome.

Volume 9: Mujihi Na Anata "Merciless Lover" in Sakuragi Mei's extensive Warui school-related yaoi series and sequel to Mujihi Na Otoko. Primary couple: Kuon Aikawa x Nanao Shirohane. Continuation.

Volume 10: Sunao ja nai Kedo "I'm Not Honest" in Sakuragi Mei's extensive Warui series and sequel to Kare ja nai Kedo. Primary couple: Yukimura Shuji and Ryuuichi Shinonome. Continuation.

Volume 11: Warui Ouji Demo Suki "I Love a Prince Even if He is Naughty" in Sakuragi Mei's extensive Warui series. Primary couple: Mikado Shirohane x Towa Aikawa. Newspaper club interference.

Volume 12: Mujihi na Karada "Ruthless Body" in Sakuragi Mei's extensive Warui series and sequel to Mujihi na Otoko and Mujihi na Anata. Primary couple: Kuon Aikawa x Nanao Shirohane. Moving in Together.