Arisa Kazuki is a kind and supportive older sister who has protected her younger brother Tsukasa from their father and his stalker Yukana Kishi. She enjoys teasing Anzu and Tsukasa but is careful not to be overly pushy given Tsukasa’s past.

Arisa is the protective older sister of Tsukasa Kazuki. She has shielded him from their strict father and from the obsessive stalker Yukana Kishi during his childhood and adolescence. Arisa supports Tsukasa emotionally and helps him navigate his fear of women due to past trauma. Though she teases Anzu and Tsukasa, she does so playfully and never crosses boundaries, mindful of Tsukasa’s past experiences.