"At Mizuhara'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 rehearse being social and build some 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!"--Back cover.