Ball! Ball!.Miu acquaints with her assigned homestay, an elderly couple she warmheartedly calls her grandparents. Meanwhile, after being scolded by Takeya for her nakedness, Ren decides to clean the apartment by defenestrating his furniture and trash; Neneko empathetically awarding her yesterdays shopping change in return. Xaki instructs Nia to apprehend Ren. The following morning Ren visits the market, and drawn by the scent of melonpan, buys a bag of it; Nia botching her capture and leaving absentmindedly. Ren affectionately visits Takeya at school, causing an uproar that settles when she is believed to be a substitute for Miu and that Takeya is her homestay sponsor. Tired and confused, Takeya and Ren retreat home.