One day, four male and female classmates who were living a normal daily life crossed the line in the room of a boy who visited out of curiosity. The blue desires of the high school students who have begun to move are intricately intertwined, and no one can stop them anymore. However, there was also Iida, who Takanari had a faint crush on. The story of the main character, Takanari's swaying love and writhing sexuality.

Takanari is a naïve high school student who is interested in sex, but wants to have H with a girl he likes. On the other hand, my friend Takashi is interested in sex, and I want to throw away my virginity as soon as possible, so I search every day to watch AV and look for a partner. One day, four male and female classmates with Takanari's unrequited crush Riho Iida decide to go to Takashi's house to play, and the four in agony cross the line as their interests take them.

Takanari, who can't say that he likes Iida, is present at the entanglement between Takashi and Iida, and the moment when Iida abandons his virginity.