Based on the eroge by Alice Soft.In a village, deep in the mountains off the beaten track, lies a house with a headman by the name of Kojiro. Secrets in this house have been ostensibly hidden. The village has been plagued by low birth rate for some time, and as a means to eliminate it, the village was provided with women from the Kamishiro family by the headman. This means was known as the "Feast." The protagonist, Mamoru, and his "onee-chan," Kotone, were the only survivors of a big fire ten years prior. Homeless, they were taken in by the Kamishiro family. However, Kotone was taken in as the eldest daughter, and Mamoru has become a servant. The "Feast" was soon upon them, and it was decided that Kotone be used. Kotone accepts this, due to the responsibility she feels to the family and Mamoru. Mamoru, who knew the facts of the feast cooperates with it out of necessity ...but.

Nozoki Ana is about an art student named Tatsuhiko Kido. After moving to Tokyo into a new apartment to attend art school he notices a hole in the wall, at first he sees nothing through the hole but one day he sees a girl masturbating so he goes to her apartment to tell her that there is a hole between the wall, he meets her and tries to chat but she walks back to her room so Kido follows her, he trips and he end up being on top of her, so she takes a picture and says to Kido that she will erase the picture if he agrees to expose each other. This begins a life of "peeping" on each other. The story follows Kido through several relationships and his everyday life while he copes with being peeped on by and encouraged to peep on his neighbor; Ikuno Emiru.