T28-547 After returning home, I had secret incestuous intercourse with my sister whom I hadn't seen in a while, without telling our parents. Mai Hachimori.

Film Introduction

On the day before the summer festival held once every three years, Mai is greeted by her sister, who has been looking forward to her brother's return. My younger sister, who has always been a crybaby, looks at me bravely. While she wasn't looking, she felt her little sister who had grown into an adult and pushed her down. "It would be nice if it was my brother. I've always loved you... I'm happy."