A freshman girl who just started high school this spring — Himeno Shizuku. Pure-hearted and hardworking, she had lived a life completely untouched by anything erotic… until one incident changed everything. A freshman high school girl who just entered school this spring — Himeno Shizuku. Pure-hearted and hardworking, she had lived a life completely untouched by anything erotic…
Wanting to change her unathletic self, she boldly joins the swim club. However, the swimming club teacher’s thick fingers accidentally touched her sensitive spot,
making her whole body heat up.

After club activities ended, she couldn’t forget that shocking feeling, and started touching herself... That incident sparks the innocent girl’s interest in sex... and she begins to explore it. What kind of conclusion awaits her when summer comes to an end…?