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

This is a historic Japanese style hotel, but after Yuji began to work part-time, everything has gone wrong. First, the young landlady and a waitress fell victims to him. Not being satisfied with them, the next games he aims at are three young married women staying at the hotel.

Based on the erotic manga by Otono Natsu.

Dramatic Tension leads to sexual release! Sayaka Shirakawa is the daughter of an art professor who specializes in death-themed paintings. She is dating one of his students, Souji Kamishiro. For some reason, Sayaka seems to be harbouring hatred for her father. One day, Mie Wakabayashi, who has romantic feelings for Souji, tells him what she’s heard about the Professor: that he has been killing his models so that he can paint their corpses. Meanwhile, Mie happens to witness Shirakawa purchasing poison, and she runs to find Sayaka…

Based on the game by Crossnet-Pie.
Ichijou Daisuke is a new teacher at Kisaragi Academy, an all female school, and he is assigned to be a job counselor. To find the appropriate job for students, he role-plays with the girl students who wear various uniforms such as a nurse, a shrine maiden, and so on.
Source: AnimeNfo

Based on the erotic game Zoku Hitou Meguri by Riddle Soft.
Mao, who has a secret crush on Mikio, makes up her mind and invites him to go on a trip. The invitation gets accepted, and at the thought of the trip just for the two she feels elated. Mikio falls asleep right after installing himself in a seat opposite Mao in the train, helplessly spoiling the sport. She expands her expectations looking forward to upcoming events, though his seeming lack of interest dampens her ardor a bit. Despite her hopeful view, however, it turns out that her passion for Mikio only ends up arousing the sexual desire of a man that appears unexpectedly…

Two large countries, Leben and Carnea, had been ruled by the kings who were men of character, and people in these countries had been living peacefully.
However, Leben suddenly intruded into Carnea, and the two countries began to war. The even fights had continued for more than six months, but when the king of Carnea died of illness, gradually Leben got the better of Carnea.
In these days, a man in a black suit visited Carnea. He had been a vice leader of the Carnea Knights, Claude, who had suddenly disappeared eight years before. His appearance had changed completely, and that made them suspicious. But when he said he had a plan to beat Leben, they gave their ears to him. He said that they would hire experienced mercenary soldiers, and that the queen and princesses would sell their bodies to earn money.
The queen and her daughter accepted his plan, and they began to take his lessons.

Based on a game by Grand Cru.
Kirisaki Rie is a teacher who has fallen in love with one of her students. Unable to smother the passion burning within, they frequently seek each other. Sometimes, they have sex in the staffroom. At other times, they meet in a classroom.