Akasaka functions as a minor background character with minimal narrative focus. Alongside classmate Aoyama, he covertly observes female students during an unguarded private moment. Later, within an impromptu group scenario involving multiple students, Maiko Kaneda initiates sexual interactions with Akasaka. He complies with her explicit instructions by performing acts concentrated on her feet and genital regions. This sequence—encompassing the observation and subsequent group activities with Maiko, Yuuki, and Luli—defines his sole documented involvement.