Tōka Kirishima, a ghoul born in Tokyo's 20th Ward to Arata and Hikari Kirishima, grew up with her younger brother Ayato. Her father guided her efforts to assimilate into human society, teaching her to consume human food and frequent libraries. This childhood included caring for an injured bird with Ayato, revealing an early fondness for animals. After the CCG captured Arata and following her mother's prior death, Touka first manifested her kagune defending against investigators when a family friend betrayed them, forcing the siblings to flee. They found refuge at Anteiku under Yoshimura's care, where Touka later balanced school attendance with work as a waitress. Trauma and her dual identity initially forged a cold, aggressive demeanor, fueling deep resentment toward ghoul investigators. Early actions included reckless vengeance pursuits, like attacking investigator Kureo Mado after Ryouko Fueguchi's death, an act that later prompted reflection on violence cycles. Interactions with human friend Yoriko Kuroiwa and half-ghoul Ken Kaneki gradually softened her outlook. Kaneki's influence proved particularly significant; their contentious relationship evolved into mutual reliance and eventual romantic love. His repeated departures intensified abandonment insecurities rooted in her family's fragmentation. Two years post-Owl Suppression Operation, Touka became manager of the coffee shop :re, adopting a more reserved, mature demeanor. Her appearance shifted to a shorter, lighter-blue bob and feminine clothing, though she later returned to her original dark-blue hair. Prioritizing community protection over impulsive actions, she exemplified this by ignoring Yoriko's execution notice to avoid endangering ghoul safety. Her relationship with Kaneki culminated in marriage after she openly confessed her feelings, reversing past emotional repression. They had a daughter, Ichika Kaneki, with another child expected, and joined the organization Goat to advocate for human-ghoul coexistence. In combat, Touka wielded an Ukaku-type kagune forming crystalline wings that fired projectile shards. Her abilities included generating a lightning-like aura and exceptional speed, honed under her uncle Renji Yomo's training. Her alias "Rabbit" referenced her ghoul mask and symbolized vigilance and familial loyalty, contrasting with Ayato's black rabbit motif representing fear. Despite her prowess, she grappled with ghoul identity insecurities, feeling validated only when human allies acknowledged her without prejudice. Touka's legacy included operating :re as a sanctuary for humans and ghouls, later relocating to the 24th Ward with Goat after :re's destruction. Her journey concluded with a peaceful life alongside Kaneki, symbolizing the series' thematic resolution.