Rent-A-Girlfriend Vol. 6 (Kodansha, 2021)

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!