Chino Kafū assists her father in daily operations at Rabbit House café, founded by her grandfather. Her late mother designed the café’s distinctive uniforms, hoping Chino would someday work there alongside friends. Chino and her father alone know the secret that Tippy—an angora rabbit frequently perched on her head—embodies the spirit of her deceased grandfather.

She has long periwinkle hair secured by black crossing clips, blue eyes, and is the shortest among her friends. Her standard attire includes Rabbit House’s cobalt-blue uniform: a black ankle-length skirt, white blouse, waistcoat, bow tie, and Mary Jane shoes. Her school uniform is a royal blue sailor outfit with a matching hat.

Initially reserved and emotionally restrained, Chino speaks in a flat, polite monotone and rarely smiles visibly, even when content. She resents being infantilized due to her stature and age, projecting maturity through responsible, organized conduct—a demeanor cultivated among adult patrons and family. Despite her composure, childlike tendencies emerge, like forcing herself to eat celery for growth or flustering when teased. Her personality softens through interactions with Cocoa Hoto, whom she initially found overbearing for insisting on a sisterly bond. Chino grows reliant on Cocoa, unconsciously preparing multiple hot cocoa drinks during her absences and crediting Cocoa for helping her open up emotionally.

Her relationship with Cocoa evolves from reluctant tolerance to profound attachment. Chino exhibits tsundere-like reactions exclusively toward Cocoa, blushing intensely when accidentally calling her "Onee-chan" or receiving affection. She finds solace in Cocoa’s scent and impulsively retrieves Cocoa’s hat from a river despite being unable to swim, later admitting overwhelming concern drove her. Moments of vulnerability include clinging to Cocoa as a sister when intoxicated by alcohol-laced chocolates, followed by intense embarrassment recalling these incidents. Chino maintains friendships with energetic Maya Jōga and gentle Megumi Natsu, her middle-school classmates, and shares a respectful rivalry with Chiya Ujimatsu, whose family runs the competing café Ama Usa An.

Her development features increasing emotional expressiveness and confidence. Early on, she struggles with casual banter but later engages in playful activities once deemed frivolous. She openly credits Cocoa for deepening peer connections. A pivotal moment sees her overcoming terror of wild rabbits to rescue one, symbolizing growing resilience. She also grapples with existential themes, glimpsing an otherworldly train associated with the afterlife—a metaphor for accepting her grandfather’s departure and mother’s legacy.

Additional traits include crafting bottled ships, a cubist drawing style, and exceptional sensory skills like recognizing coffee aromas or performing cappuccino-based fortune-telling. She adores fairy tales such as "Puss in Boots," trees, and the smell of bread but fears horror stories and celery. Her pet rabbit Anko often perches on her head, and she claims improved focus when balancing Anko or Tippy during tasks. She aspires to become a barista and inherit Rabbit House.