About the fact that my daughter's boyfriend was a sex friend.

One day, her daughter Ami says she'll bring her boyfriend, and her mother Mizuki is in a good mood. However, his partner was Mizuki's sex friend Kiyoharu. Despite her confusion, Mizuki is excited by her daughter's boyfriend, and she approaches her with a seductive smile, "Are you greedy not just me, but also with my daughter?", and enjoys the secret relationship while playing with his cock. However, Mizuki's body, in heat, can't resist having sex once, so she ends up visiting Kiyoharu's bedroom, where she has to stay overnight...