Ayumu Kise is a bright and popular third-year high school student, actively involved in the Naginata club. She radiates cheerful energy and enjoys a wide circle of friends, yet her inherent pride makes her prone to flashes of jealousy, particularly concerning naginata—a discipline she has dedicated herself to since childhood. Ayumu harbors a one-sided rivalry, fixated on fellow club member Miyabi Fujiwara as her competitive counterpart. She speaks in a distinctive Kansai dialect. Throughout the narrative of "Memories Off: Sorekara" and its adaptations, including the "Inori no Todoku Toki" segment of the OVA "Memories Off 3.5," Ayumu maintains her established role as a supporting character linked to Naginata club activities, consistently portraying her defined personality traits and dynamic with Miyabi.