Kurumi Kawai is the vice president of Minamigaoka High School's Magic Photography Arts Club. She radiates cheerfulness and a fun-loving spirit, frequently engaging in playful antics with her clubmates. A mischievous streak surfaces when she captures video footage of Hitomi Tsukishiro leaving Yuito Aoi's room and uploads it online, igniting rumors about their relationship.

Kurumi harbors profound admiration for her elder sister, seeing her as an ideal to strive toward. This deep respect fuels an underlying inferiority complex, leading Kurumi to constantly measure herself against her sister and grapple with feelings of inadequacy about her own future path. Confronting these insecurities forms her core character development. Through interactions with the youngest club member, Chigusa Fukasawa, she gradually learns self-acceptance without comparison. Chigusa offers quiet encouragement and emotional support, allowing Kurumi to navigate her self-doubts at her own pace.

Kurumi shares a dynamic relationship with Chigusa, marked by frequent bickering and flirtatious exchanges. Their camaraderie deepens naturally, with Chigusa displaying keen insight into Kurumi's emotional struggles while honoring her boundaries. This mutual support cultivates a stable and trusting bond between them.

Visually, Kurumi is consistently depicted in official media wearing glasses and sporting a pigtail hairstyle. Her narrative arc concludes with heightened self-assurance and diminished anxiety about the future, marking a transition toward personal contentment independent of external expectations.