Based on the manga by Hiyo Hiyo.
Princess Cecelia was kidnapped by a witch, Etruria, and she was confined into the tower. The king proposed that if someone would save her from the witch he would let her marry him. A knight named Albion accepted the proposition. Whether would Albion beat the monsters living in the tower to get the top of the tower where the princess was confined? What would become of Princess Cecelia and Knight Albion?
Source: AnimeNfo

Based on the erotic game by Speed.

Your childhood friend, girl who you have feelings for, elder sister, mom, police officer, nurse, twin sisters, class president, pregnant woman, bad girl, bride, camera nerd, homeless woman, a member of rhythmic gymnastics club, female teacher, blind girl……..! Rape them all! It is your mission!!!

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.

Akira is beautiful. So much so that he can have any girl… or guy that he lays eyes on making him very self-centered. Unfortunately, the only woman he has ever wanted is the one woman he could never have, his own sister. When he first met Kaname, naive to the ways of the world, his own world slowly began to change. The realization of the reality that his sister can never be his and that he can never find true comfort in her arms devastates him. There, from the depths of his despair, he finds salvation in Kaname’s loving embrace.

High Wizard Asuka is a cute, pretty, intelligent, and self-conceited girl. On the eve of the final boss battle, she seeks out her partner, Kei, in his bedroom in order to ascertain her feelings.
~ translated and adapted from official site by Cranston

A modern world where humans and demi-humans exist. With the sudden emergence of a very special individual, 3 women set out to milk him for all hes worth!

Masaki’s in trouble. His rich father is about to disown him! But he’s still got one last chance: if he can collect on some old unpaid debts, then all will be forgiven. Masaki may be a slacker, but he’s quick to realize that the fastest way to collect is to go after the debtors’ hot, busty daughters!
And so, Masaki’s “game” begins. The rules? If the girls can’t pay back the debt, they have pay up with all sorts of sexual favors. They’ll have to cater to his every carnal demand, fulfill his every fetish… Masaki may not be collecting much money, but he doesn’t care – he’s surrounded by girls moaning in pleasure and begging for more!