Eiji, a teenager eager to follow in his late father's scientific footsteps perfects one of his old experiments to diminish the barrier between pain and pleasure.

A man who felt the ideal in everything about women and took a mistress away from her partner. And so began a life of deep love between the two. But one day, when a female classmate came to stay with these two, they experienced a threesome and things changed. Furthermore, as she experienced it with many men, she felt the limitless joy of being a woman...

The only way to the big game...is the train.

A female teacher conducts a lessons to four girls from class 3C...

This was a time when the level of girls appearing in AVs was rising, so she has a cute, sharp face, and her techniques are self-taught, which is great! It's great to see a cute girl doing a pink salon-style, head-shaking, thrusting blowjob, and it's also great to see her lewd moans as she shakes her hips in the cowgirl position. All men love cute and vulgar, but the level of vulgarity is amazing! It's great to see rough sex that is self-taught and doesn't care about looking good, which was only possible at a time when many girls didn't know what other people were doing with sex.

Feel like an acrobat! A crazy female body cross, a climax scene that continues for hours!

In an abnormal situation, the perverted nature is exposed! "Do something more naughty!" Abstinence makes the desire grow bigger and bigger. The feelings that have been building up...