"I'll teach you.... good things"

Sexual lesson taught by my cousin. Turning my body into adult body by touching it, he took my first time in front of my mother!?

By the cousin whom live next to her house, Akito, is tutoring Yukino, who longs for Akito, who has a sadistic side, and one day he begins to teach her about adult lesson!?
Yukino who learned about pleasure through the training, the day has finally come for her to lose her virginity.

「イイ事…教えてあげる」従兄のお兄ちゃんに教わる性のお勉強。身体を触られ開発されて、母の前でハジメテを…！？隣の家に住む従兄の秋斗(あきと)に、家庭教師をしてもらっている雪乃(ゆきの)。一途に秋斗を慕う雪乃にサディスティックな感情が芽生えた秋斗は、ある日を境に大人の勉強を教えるようになり…！？快感を仕込まれシツケられていく雪乃。ついに処女を失う日が来て…！？