Movie
Description
Shō Kurusu attends Saotome Academy as a 15-year-old S Class idol student, standing 161 cm tall with blond hair and blue eyes. He consistently wears black nail polish and hats to appear taller, maintaining a fashionable style while resenting "cute" comments about his height—a trait that earns him nicknames like "Ochibi-chan" from peers including Ren Jinguji. Born June 9 as a Gemini, he has a taller younger twin brother, Kaoru Kurusu, who protectively watches over him. Their mother conducts orchestras overseas while their father works as a stylist at Shining Agency. Diagnosed with a congenital heart condition predicted to end his life by age 12, Shō channeled defiance into mastering karate, matching his idol Ryūya Hyūga's skill.

Frequent childhood hospitalizations fueled his resentment toward physical limits. Anime adaptations depict him as Natsuki Shinomiya's childhood friend, whose pursuit during a violin competition triggered Shō's acrophobia after a near-fall from a tower. Though absent in games, this established their dynamic; Shō later conquered this fear during the anime's second season, performing high-altitude stunts calmly. He abandoned competitive violin upon hearing Natsuki's superior performance, then pursued idolhood after Ryūya inspired him via the drama "Fighting Prince" and intervened when delinquents threatened him. At Saotome Academy, Shō became a core member of idol group ST☆RISH, collaborating with songwriter Haruka Nanami. Their bond deepened through school festival performances and a promise to debut together, evolving into romantic feelings, though cardiac strain occasionally interrupted activities like rehearsal collapses.

Involuntary cross-dressing recurs across media: games force him into modeling as "Kosoba Yui," a popular tsundere girl persona after failed pool punishments, though he prioritized music with Haruka over modeling. Anime versions use cross-dressing for comedic scenarios. His personality blends energetic enthusiasm with a quick temper when mocked about height, yet resilience and optimism endear him to peers despite health struggles. He rooms with Natsuki Shinomiya, their relationship oscillating between camaraderie and conflict when provoked, and trains under QUARTET NIGHT's Ai Mikaze during advanced arcs. Evolving from defensive pride to valuing teamwork, Shō openly confronts physical limitations, outliving his medical prognosis to achieve his ST☆RISH idol dreams.