Yaiko caught Hokuto masturbating at school once, so she decides to give him a bit of helpful service every now and then. Then, in order to burn off calories, Rimu and her boyfriend Masaki engage in sexercise.

Natsume and his girlfriend Yumisaka have been going out for two months, when suddenly she starts asking him to video record all of their lewd activities together. Then, Seta goes to Yumisakas house and meets with her younger brother Shuu, and is so horny she seduces him.

Miyuki tries her best to be cordial to her son Yutakas friend Masato, but when Masato makes a move on her, she is too shy and repressed to dissuade him.

Suddenly, the world has made contact with a parallel universe of a fantasy world, and they decide to send over twenty elvish students to learn about modern society. Their human teacher, Hiroki Kobayashi, began a romantic relationship with one of his new students, the elf girl Laranoa.

Shinozuka has been helping Shunya prepare for high school soccer nationals, but when they loose the game, she decides to console him. Then, Nozomi needs some help picking out a swimsuit, so her senpai helps by picking out the skimpiest one in the shop!

Before she went out as Airi, but now her daughter Aya brings home a man she met that night. Youichi instantly recognizes her, and seizes the opportunity for another night with her!