Kaho and Kasumi are sisters indebted to the yakuza. A student learns of their predicament and decides to pay off their debt for a certain price; they must become his sex slaves until he sees that their debt is clear.

Based on the adult PC game by Silky’s.

Based on the adult manga by Midori no Ruupe.

Spring has come to Tokyo once again, except this year you’re now living alone after your parents had to leave due to work. You’re renting a room at an apartment run by your aunt, who bluntly asks you, “Could it be that you’re not interested in girls…?” Well, of course you are! It’s just that you haven’t had much luck finding someone. “Your youth is now. Go and find your love or you will regret it later.” With just that little push, you feel a little confident that it’s your time to fall in love. Yes, your love will begin to bloom now… (Source: VNDB)

“Shinpa”, the practice of having on one’s person a shoelace which color signifies his or her preferred sexual fetish. In this way also is one able to search out his/her ideal partner. (Source: translated and adapted from official site by Cranston)

Akira’s father, an archaeologist, has remarried, giving him a new stepmother and three stepsisters, Yuki, Nana and Miu. While on his honeymoon, Akira’s father makes an archaeological find and decides to stay on site in order to supervise and leaving Akira at home alone with his new family members. After being discovered in bed with Yukie, his stepmother, Akira finds a box containing a scroll and three bottles. Using the knowledge his father taught to him, he reads the Sumarian language on the scroll and finds himself in a contract with the goddess Inana, who tells him to collect the love juices of his sisters in the bottles before the next full moon or else a terrible horror will befall him. (Source: ANN)

An unfortunate accident befalls Naoki Shindou and his whole class when lightning strikes the airplane they were traveling in for their overseas trip. The only ones able to survive are himself, his classmates Momoka Kiriyama and Kana Miyamura, their teacher Sanae Nakazono, and the flight attendant Asami Kakinuma. Now stranded on an island and far from rescue, it might prove to be too challenging to keep their sexual instincts at bay. [Written by MAL Rewrite]

The main character is a white-collar worker. He has a wife, but she runs away from home. When he is at a loss what to do, Sayuri, his wife’s mother, reaches out for him, “I’ll replace her… Please…” As he lives with her, he gradually falls in love with her, and so does she… (Source: VNDB)

To overcome his attraction for his younger sister Hana, Yuuichi Mitsui made sure to enroll at a university far away from his home. Unfortunately, being separated from her only strengthened his feelings. He continues to feel guilty for harboring illicit thoughts when suddenly, Hana shows up at his doorstep on a summer morning, looking more beautiful than ever. However, despite her physical maturity, her intellect is that of a child. Consequently, Yuuichi tries to hold back from laying a hand on his innocent sister. But it is easier said than done, especially when Hana’s ignorance—combined with her innocence—makes her a woman that Yuuichi can’t help but desire. [Written by MAL Rewrite]