Kirari Momobami

Kirari Momobami is the current and seemingly invincible 105th Student Council President at Hyakkaou Private Academy. She is also the creator of the infamous Housepet system, where the loser must serve the winner by following their orders while wearing an identification tag of "Mike" for males and "Pochi" for females. Kirari is the current head of the Hundred Devouring Families, a conglomerate of powerful clans aligned with the family of Yumeko Jabami.

Standing at 166 cm tall, Kirari is an attractive and light-skinned young lady with long, white hair styled in two knotted rings with ribbons entwined in them. She wears the standard Hyakkaou Private Academy school uniform consisting of a red blazer with black trim on the cuffs and around the neck, complete with gold buttons and a black tie. She sports a gray-colored skirt with patterns, black-tinted pantyhose, and brown loafers with black soles. Outside of school, she wears a black kimono with her family crest on the back and sides, decorated with a floral print on the lower half, a matching obi, and white tabi.

Despite her refined and proper appearance, Kirari is a calculating, manipulative, and psychopathic individual with little regard for anyone but herself. She is a complete narcissist who belittles everyone besides herself, believing that everyone must play by her terms alone. Kirari's sadistic side is revealed through her creation of the Housepet system, which encourages mistreatment, bullying, and sub-human conditions on other students.

Kirari has no regard for human life and is only interested in what entertains her. She doesn't worry about the outcome of her actions, as long as the journey is exciting. Kirari refers to the academy as her aquarium and enjoys observing how people behave when they are at their lowest and have to fight to reach the top. She is an incredible gambler who takes many risks, and her outcomes always favor herself. Kirari takes great pleasure in watching people suffer at the hands of her gambling outcomes, setting up life plans and being overly confident in her ability to win.

Despite her generally inhumane and detached demeanor towards others, Kirari is shown to possess a genuinely close sisterly relationship with her older twin sister, Ririka Momobami. She treasures and loves her sister deeply, and this is evident in her interactions with Ririka.