In'youchuu The Animation

Inoitsu is a reincarnation of the erotic game of the same name in the genre of visual novel. However, in this game, the main focus is not on reproducing the gameplay.

The uniqueness of Inoitsu lies not in the absence of a plot, but in the length of the erotic scenes. The plot, if you can call it that, can be described in a few words: in a children's institution, a man and a woman protect a girl from monsters, but quickly become their prisoners themselves. The origin of the monsters, their goals, and the characters' relationships remain undisclosed.

The main feature of this erotic game is that erotic scenes take up a significant part of the time — it's safe to say that 20 minutes out of 24 in the series are devoted exclusively to eroticism.