Kenta's mother-in-law, Hijiri, suddenly got married due to his father's remarriage. It doesn't take long for Kenta, who is the same age as her, to be attracted to the kind and intelligent Hijiri. One day, her father went on a business trip away from home for three days. Kenta is happy to be alone with his idol, Hijiri, but in reality, he doesn't know how to interact with her.
