Hideya is visited by a cute little devil girl named Rima. She claimes she is called by him a month ago. Hideya demands her to be his slave.

Based on eroge (erotic game) Oni Chichi ~Manamusume Kyousei Hatsujou~ by Blue Gale.
Marina and Airi’s mother divorced few years ago and got remarried recently to a young man. While Marina accepts her new stepfather, Airi detests him. Little do they know that really he’s a pervert that sniffs their underwear and wants to make them his own by making a love drug that will turn Marina and Airi into a sex-hungry sluts. When Airi comes home and notices her schoolmate Sana giving him a blowjob, he sprays the drug on her. Now he will do with them whatever he pleases.

The locals know all about Dr. Fuwa. His reputation for taking advantage of his female patients has left him little to do except his nurse Megumi. When he’s suddenly called in to investigate a mysterious illness that’s been affecting the nuns on a remote island, Dr. Fuwa’s certainly not above having a little fun with the patients – each and every one of them a cute little nun-in-training. But will he be able to uncover the truth behind their terrible condition?

The other day, when I was reading an adult book, I thought, “I can tell whose breasts they are by just looking at them. Well, am I a king of oppai?” However, there was no way to prove it…. But one day, I receive a letter and it includes a bunch of free sex tickets! Also, the reverse side of each ticket has the photo of someone’s breasts. When I’m confused, a girl, Nil, appears in front of me. According to her, I’m qualified to take part in a game. It seems the tickets aren’t fake. My mission is to look for a girl who’s got the same breasts printed on the ticket. Like this, my search for oppai begins….

Aki Aoi and Sora Aoi are a pair of close siblings who have shared an intimate bond since childhood. During their coming of age, they each come to realize the true depth of the love they feel for each other and consummate that love in secret. They keep their younger sister, Nami, Sora’s twin, in the dark about their new relationship. Nami, clueless of what is happening in her household, aims to set her brother up with her best friend, Kana Sumiya. Despite these relationships Nami seems to have feelings for someone near to her too, but keeps them secret.

Kouichi has been married for only five years and already he’s got the seven-year itch. He suffers from a very boring, very ordinary life with his wife Kanako and their daughter. Then one day his neighbour Kimihiko suggests they secretly swap wives. They decide that they will each seduce the other’s wife and explore the wonders of an illicit affair. Kouichi isn’t so sure about it at first, but soon finds the deception, fantasies and excitement just the thing to scratch that itch!

A plucky coed dreams of new friends and college glory days. Her dream becomes a raunchy reality when she’s inducted into an erotic sorority. To become a member, she performs outrageous acts of debauchery as her sexy sisters instruct her in the arts of lust!

Based on the adult PC game by Silky’s.