Asanaga Ryuutarou No Midara Na Nichijou
A Ikebana Iemoto has a bondage and humiliation kink that isn't being satisfied by his male lover. When he is blackmailed into sex by a film director that his brother rejected, all hell seems about to break loose. Kitazawa can really draw unhinged men.
Kyoushitsu no Yugami
Abusive relationship between an older male teacher and an underaged male high school student incorporating dubcon, exhibitionism/public sex, secret vibrators, sounding, blackmail and humiliation.
Shitsuji Kyoushi no Renai Jugyou
A silly comedy about a butler-turned-teacher who tames a spoiled young master-delinquent and his coterie of other young master-delinquents at a fancy-schmancy private school with blackmail, public humiliation and spankings. Ride 'em cowboy!
Dakaretai Otoko Ichii Ni Odosarete Imasu.
Social Reform Season
Tameiki No Ondo
Two very different one-shots. (1) A highschooler blackmails his tutor into sex by threatening to reveal that he has a crush on his older brother. This one has a spectacular plot twist and is very engrossing. (2) Zany comedy about a highschooler who spends so much time chasing after an unrequited love, he completely neglects to notice someone who is in love with him. The first story is much more absorbing than the second, but it doesn't look as though this collection of short stories is going to be finished since it hasn't been updated in forever.
Darenimo Naisho de.
A slip of the tongue sends Matsushita into the arms of a blackmailer, not that he minds. A story about being comfortable enough to let a partner take over responsibility for sexual wellbeing.
Tsume to Toge
Kazuomi, a dark figure from part-time teacher, Shuuji's, past, shows up to exact revenge for a violent incident that Shuuji blocked from his memories. He forces his way with Shuuji using blackmail and overpowering him physically, but the story turns on Shuuji's genuine contrition and desire for atonement. An emotional soap opera that starts off with fury and betrayal, and ends gently.
Renai Kyoutei Nukegake Nashi!