sakai's aunt has quietly seduced me in his underwear.

Eriko has been conscious of her son’s friend, Daisuke, as a man. One day, a feeling overflowing with cumulative emotions finally became unbearable. Eriko, who has changed into a competition underwear when she is said to be more flashy than usual, finally succeeds in tempting Daisuke. and first of all, we're going to do a little research... i'm going to smash the sperm with a nasty whistling. Daisuke ran away from home because of his awkwardness. Don't notice that you accidentally forgot your phone on the spot. On the next day, Daisuke visits the Sakai family again to receive forgotten mobile phones. Then Eriko wore a lingerie, which was even more irritating and distressing, and waited for Daisuke.