OVA
Description
Subaru Asahina, the ninth son of the Asahina family, was born on September 21, 1990. He is 20 during the first season’s events and 23 in later storylines. Standing 183 cm tall, he sports short, messy grey hair and grey eyes. His typical attire includes athletic wear like a sleeveless hooded jacket emblazoned with his university’s name and track pants. Later appearances show longer, unkempt hair, a five-button blue jacket, grey pants, and white-and-blue sneakers.

Driven by lifelong dedication to basketball, Subaru displays minimal interest outside sports, resulting in social awkwardness—particularly around women. He maintains a stoic, upright demeanor but becomes visibly shy and stammers when interacting with his stepsister, Ema Hinata. Her arrival disrupts his single-minded focus; her perceptiveness about his training and kindness draws him, marking his first deep attachment beyond athletics.

Subaru shared a close childhood bond with his brother Natsume, who introduced him to sports. Their relationship fractured when Natsume abandoned athletics for a corporate career, which Subaru viewed as a betrayal, fueling lasting resentment.

A turning point occurs at his twentieth birthday celebration. Provoked by teasing and alcohol, Subaru vents frustration about Ema unaware she overhears. Overcome by guilt, he later forces a kiss on her in her room. Though Ema dismisses it as accidental, Subaru harbors profound regret that impairs his basketball performance—relieved only when she absolves him. Novel adaptations confirm the kiss was intentional.

Post-incident, Subaru grows fiercely protective of Ema. Her presence strengthens him, and he vows to become "a good man" worthy of her happiness. This resolve leads him to punch Natsume during an argument in front of Ema, an act he later regrets, and to confess his feelings to her first among the brothers.

Their relationship evolves through shared moments: stolen glances and flustered exchanges. When offered a professional basketball career in Kyushu, Subaru hesitates to leave home but accepts. Departing, he tells Ema to "forget everything" between them to focus on basketball, distressing her. Her attendance at his games motivates exceptional performances, including a winning shot. Upon returning, he reaffirms his love, declaring he will "never give up" on her.

Ema facilitates Subaru’s reconciliation with Natsume, helping him recognize Natsume’s enduring care. In the anime, this coincides with his recommitment to Ema. Manga adaptations depict Subaru self-sacrificially conceding his love to Natsume, stating he would yield if it ensured Ema’s happiness.

Endings vary across media: Novels conclude with Ema reciprocating his feelings; they marry, have a daughter named Chitose, reside in Tokyo, and Subaru remains a professional player who shares sports with his child. In the broader "Brothers Conflict" narrative, Subaru and Natsume emerge as the final contenders for Ema’s affection, with her choosing Subaru.

Additional details include his name meaning "Pleiades," attendance at Meiji University, role as number 14 on its basketball team, and assistance with campus manual labor—a trait Ema admires. His Virgo zodiac sign aligns with his early romantic inexperience. He maintains the Sunrise Residence’s exterior, sweeping leaves in spring and autumn and shoveling snow in winter.