Takafumi goes to his friend Tomoichi's house to play. There he meets Tomoichi's mother, Risa, but Tomoichi complains that his mother is plain. However, when Takafumi leaves the room to use the bathroom, Risa appears in front of him and starts lifting her skirt as if to seduce him. There she finds flashy underwear... Takafumi panics, but Risa pushes her underwear aside to reveal her crotch and starts sticking her fingers in...