Inyouchuu is an adaptation of the visual novel hentai game of the same name. However, the emphasis in its creation was not on repeating the game. The trick is not that Inyouchuu has no plot, but the length of the scenes. The plot, if there is one at all, can be retold very quickly. At a certain school, a boy and a girl are guarding another girl from monsters. But they were very quickly captured. Where the monsters came from, why, and how the characters relate to each other is not explained. The peculiarity of this hentai is that the hentai part of the video is very big, we can say that 20 out of 24 minutes in the series is pure hentai.