At Chizuru's request, Kazuya agrees to go on a practice date with Sumi-chan, who's trying to make it as a rental girlfriend despite her crippling shyness. It's an opportunity for Sumi-chan to practice being social, building confidence and earning power--or it's supposed to be, until who should butt in but Mami-chan! And she has a bombshell to drop... A practice date quickly turns into an all-too-real battle!