Tsukasa Kazuki is a high school student initially appearing cold and reserved, routinely deflecting romantic advances despite his popularity stemming from his good looks. He possesses fair skin, a tall slender frame, precisely trimmed orange hair, and striking orange eyes. His standard outfit is a school uniform featuring a carelessly undone top button on his shirt, dark blue slacks with pale stripes, white and blue sneakers, and a black wristwatch worn on his left wrist. He frequently dons hats and sunglasses in public to dodge unwanted notice. Before transferring schools, Tsukasa exhibited an open-hearted, caring, and sociable nature, effortlessly forming friendships. His personality underwent a drastic shift after an older woman named Yukana Kishi began stalking him. The stalking commenced when Tsukasa assisted Yukana after she tripped; she misinterpreted his kindness as romantic affection. Yukana escalated to sending unsolicited gifts, planting hidden cameras and voice recorders in his home, and fabricating social media accounts using his and his mother's identities. These accounts disseminated damaging falsehoods, severing his friendships and inflicting profound distress. His father compounded the trauma by blaming him for the situation. This ordeal resulted in post-traumatic stress disorder (PTSD), a paralyzing fear of women, and panic attacks when isolated with them, compelling him to leave his family and transfer schools. Tsukasa's living situation abruptly changes when a wizard named Riri accidentally floods his apartment, forcing him into temporary residence with Anzu Hoshino. Anzu's non-romantic directness allows him to feel unexpectedly comfortable around her, starkly contrasting women who view him solely romantically. His trauma violently resurfaces during encounters with Yukana, provoking intense anxiety. Anzu intervenes when Yukana reappears, physically shielding Tsukasa and vowing to protect him. In the confrontation, Yukana lashes out with a knife, slashing Anzu's forehead, yet Anzu stands firm. This act, combined with Anzu's later tearful embrace after Tsukasa confides his trauma, helps him confront his suppressed emotions. He starts processing his past, crediting Anzu as his salvation and nurturing concealed feelings for her. His recovery involves progressively lowering his defenses, establishing authentic friendships beyond Anzu, and diminishing his reliance on isolation. Tsukasa's relationship with his family remains fraught, particularly with his father, though his mother and older sister supported him during the stalking and involved law enforcement. His journey focuses on healing from trauma through mutual trust and support, moving from isolation towards embracing emotional vulnerability.