Art student obsesses over teacher's erotic, manipulative relationship with wife, blurring observer-participant boundaries.

Lonely wife Yukiko, neglected by husband, faces family secrets and taboo encounters when father-in-law visits.

Hated professor turns tables on vengeful students who tried to drug and humiliate him.

Shinji's descent into voyeurism and assault after discovering campus rape website, affecting childhood friend Miku.

Three curious women film their sexual exploration, evolving from documentary to explicit adult video.

Secret club auctions virgins to clear debts, forcing them into sex with bidders after medical verification.

Office romance drama as new recruit Ono juggles girlfriend Rie and seductive manager Sugiyama.

College novelist Masato juggles studies and romance with five captivating women competing for his heart.

Ryuki refuses hospital discharge until he satisfies every perverse nurse and the director.

Yuji loves his late brother's fiancée Satsuki but sleeps with coworker Miki, creating a romantic dilemma.

Magical girl's consciousness transferred into android body, exploring identity and humanity while adapting to new existence.

Jyunichi plots to seize hospital control from the boss's daughter by seducing nurses one by one.

Overworked student Tomo shrinks after ancestor's intervention, becoming helpless plaything for women.

A boy gains invisibility from dropped medicine and uses it to peep and molest at a girls' school.

Pop trio Twinkle must satisfy ruthless industry demands, rival group Lovely Ladies, and shady don Kijima's carnal desires for fame.

Orphaned sisters become slaves to pay debts, trained by manipulative mentor aiming for perfect obedience and retirement.

Orphaned boy and stepmother taken in by grandfather to become sole heir.

Nanase is sexually abused by classmates to atone for her father's alleged murder, while her humiliation is publicly exposed.

Shy nurse Satsuki uses sex to fix her medical mistakes, risking her reputation.

Wrongfully accused salaryman becomes 500th apprentice in "Chikan-do," mastering groper techniques to clear his name.