Misaki Aiba appears in the 2009 OAV. She is the daughter of Makoto Aiba and the sister of Yuna Aiba and Natsuki Aiba. Misaki, along with her family, becomes confined within a hospital. There, they are compelled to participate in a game involving sexual consequences, a scenario echoing mechanics established in a prior installment. This event defines her documented narrative involvement. The available materials focus solely on her role within this familial group during the central conflict, without detailing her personal history, motivations, appearance, personality, or individual actions beyond this situation. Misaki Aiba is exclusively featured in this 2009 OAV, with no appearances or development in other seasons, films, spin-offs, or expanded universe content.