TV-Series
Description
Rui Tatsumi, a 172cm-tall Aquarius with AB blood type, attends Ayanagi Academy. His bright bluish-green eyes and light blonde hair feature asymmetrical styling—bangs swept left, shorter on the right. He frequently replaces his uniform vest with a light grey hoodie and wears his blazer unbuttoned. Training attire includes a white zip hoodie with black trims on pockets and sleeves, paired with a bluish-green shirt, white knee-length pants, and white dancing shoes.

Respected as Team Hiragi's leader, he balances humility, kindness, and confidence. He maintains strong bonds with teammates and rivals like Team Otori, whose potential he recognizes without viewing them as threats. His perceptive nature identifies unique motivations behind Team Otori's formation. He displays seriousness when upholding standards or correcting behavior, valuing authenticity and rejecting self-deception. His leadership prioritizes confidence in musical collaboration.

Childhood shyness, frailty, and frequent illness earned him nicknames like "quiet" or "weak." Sawatari Eigo, his childhood friend, often cared for him during illnesses. Their families share generations of closeness, with the Sawataris historically serving as Tatsumi stewards. In middle school alongside Nayuki Toru and Tsukigami Kaito, Tatsumi was nicknamed "Princess" and Sawatari "Knight." He enrolled at Ayanagi Academy driven by a lifelong passion for singing, honed through early vocal lessons. A conversation with Tsukigami Kaito during choral festival practice ignited his interest in musical acting. Middle school Drama Club roles, often female parts like an "exotic princess," reinforced his nickname. Academically average, he excels in practical subjects like music, PE, art, and technical crafts but struggles severely with home economics—his cooking is notoriously hazardous. He and Sawatari review coursework daily without pre-exam cramming.

His defining relationship is with Sawatari Eigo, spanning childhood friendship, classmates, roommates, and teammates. Sawatari manages many private aspects of his life, prompting Tatsumi to acknowledge his dependency. Ugawa Akira respects him intensely, using "Tatsumin" and heeding his corrections despite a brash personality; Tatsumi defends Ugawa as "not a bad person." With Tsukigami Kaito, he shares a middle school history and acknowledges his talent, apologizing for Ugawa's behavior toward him. He interacts politely with Nayuki Toru but maintains distance. Regarding Hoshitani Yuta, he acknowledges Team Otori's potential while asserting rivalry, finding Hoshitani "pure and interesting" yet questioning his leadership due to limited theatrical knowledge.

Trivia includes his SS rank in the Entrance Audition and using Shodoshima's Angel Road photo as his group chat icon. His cooking caused Tsukigami nightmares in junior high, poisoned Hiragi and Sazanami during a sports festival curry event, and triggered kitchen explosions in anthologies. Sawatari intervenes to prevent him from consuming these "poisonous" creations. In Season 1 Act 7, he broke chains securing the Hiragi villa gates by force, leading to reinforced chains in Season 2 Act 6. Alternate portrayals include a dragon motif (Animal Park Series), a kitchen-banned ryokan landlady (April Fools Series), and a noble (IF Series). He enjoys Nayuki's family tea despite others' reservations. Daily routines include refilling a constantly running humidifier each morning and indoor leisure like reading or training. He prefers fermented foods and grain-based drinks like barley or corn tea, uses visualization for stress management, and prioritizes sleep due to low blood pressure. He demonstrates dexterity with sewing machines and electric saws, favors sunny or partly cloudy weather, and frequently uses the catchphrase "Ne, Eigo?" (Right, Eigo?). Performances include "The Elegance" (duet with Sawatari), "Because You're There" (duet with Hoshitani), and Team Hiragi's "Caribbean Groove" and "Star of Star!".