Sweet Confinement

Mao's ex-boyfriend, Riichi, suddenly appears out of nowhere. She'd vowed never to see him again, and the shock makes her slip and fall down the stairs. When she awakes, Mao finds herself in Riichi's apartment. Riichi insists that Mao stay with him so he can help her recover from her injury. But, how is Mao going to handle this...? (Source: Renta!)