Based on the game by Ciel.
Three boys: Yuuichi, Takidani and Abiko. Three girls: Nagisa (Yuuichi’s little sister), Kanami and Youko. This is the story of complicated feelings and love triangles between these six students during their last year in high school, as they discuss and settle down about their future, specially love.

Certain subjects being taught these days at college aren’t always on the curriculum…
Sex education is one of them! Here at our all-girls school, one male teacher takes it upon himself to best educate students in the ways of carnal knowledge. Using (and abusing) his authority, he lures the hottest students into his lair and has his sleazy way with them! In the the end, these girls will learn some lessons they’ll never forget.

Strange monsters start to appear on the streets, raping women.
How is all of that connected with the appearance of a second moon in the sky? That’s what Ryou is about to find out.

Seventy years ago, several mysterious murders occurred in Tokyo, Japan. Young, beautiful women were found dead, their bodies dried up like ancient mummies. Now young women are dying the same way and Miho, a 19 year-old college student discovers that a weird stranger is stalking her. While her best friend Azusa, is busy seducing their professor, she discovers he is not human at all, but a horrible tentacle-endowed monster! Now that his dark secret is revealed, both girls are on the run for their life, but can she escape from the hideous monster disguised as a mild-mannered professor?

Kareki Tsunetaka is a veteran home security officer with 20 long years of continuous experience. He’s successfully extorted the weaknesses of Katsuragi Shouko, the woman who Tsunetaka’s father remarried, and her two children from her previous marriage – Sayaka, the older sister, and Yuki, the younger sister.
To protect the Kareki household from being taken over by the scheming Shouko and to make the house’s residents fear him, he sexually assaults them all, daily. Until the day he gets the mother and daughters to move out of the Kareki household, Tsunetaka is committed to his “duties” as a home security officer.
In the entryway, bathroom, or dining room…
In a school swimsuit, pink nurse’s outfit, or bunny costume…
In that house, whenever and wherever he wants, Tsunetake makes the three bitches wear assorted costumes and repeatedly violates them. To instill even further dread in his targets, he does not grow lax with surveillance and redoubles his efforts instead. On all accounts, it seems the three women have yielded to his coercion and incessant lust. Everything is going according to plan.
However, the home security officer fails to notice the suspicious change in the way the bitches look at him.

Based on the erotic game by Erectlip.

Kaori is a very popular idol singer. She is just finishing her first live tour. However, this innocent-looking girl hides a secret that makes her not-so-innocent. You see, Kaori is actually intersexed (or, in less medical terms, a “hermaphrodite”). She has two sets of “parts”. Only her manager and lover, Yuko, is aware of this. A rival idol singer and lesbian who appears to have known Yuko in her past, Saki, is also about to find out. If word of Kaori’s secret ever gets out, her career will be finished.

Tired from all the extra work hes been doing at school, our main character decides to use his lunch break as “nap time”. He finds a secluded area in a tower that was supposed to be the gardening club’s responsibility…but it looks like no one has been here in months…
After a few times of napping there he notices that he always has the same dream..however this time something is different… He wakes up to feel something warm and round pressing against him.. It’s the missing female student that everyone has been asking about! And she wants to sleep with him!?