Kawamura can't stop being curious about Mayu, his friend's mother. The other person is married. Moreover, she's his friend's mother. It was a love that was over before it even began. Even if it doesn't come true, I want to make some kind of memories. Kawamura, who decided to peek at Mayu, sneaks out of his friend's room... and there he discovers Mayu's lewd secret. He is possessed by her more enchanting than he imagined...
