"Seikatsu Shuukan" The Animation follows Shuntarou, a perverted high schooler obsessed with eroge games and harboring taboo desires for his three mean younger sisters, who despise his panty-stealing habits. After discovering a mysterious game, he awakens ten years younger, posing as a "cute" shota friend named Koharu to infiltrate their home and fulfill his fantasies with the now-older sisters Fuyuno, Natsuki, and Aki in a whirlwind of incestuous encounters.