OVA
Description
Tsubaki Asahina serves as the fifth son of the Asahina family and the eldest of triplets. He shares an identical appearance with his brother Azusa but differs from their fraternal triplet Natsume. His distinctive features include messy white hair covering the right side of his face, violet eyes, and a beauty mark beneath his left eye. Tsubaki typically wears earrings, a pink diamond-patterned cardigan layered under a black blazer, trousers, boots, and a pendant necklace. During high school, his natural light brown hair was dyed white.

Tsubaki initially displays a playful, teasing demeanor marked by immaturity, frequently provoking his brothers and the family's adopted sister, Ema. A dedicated otaku, he harbors a passion for anime, manga, and video games, especially those featuring little sister archetypes, leading him to idealize Ema. Despite his easygoing exterior, he demonstrates serious commitment to his voice acting career, often collaborating professionally with Azusa. Beneath this lies a struggle with feelings of inferiority toward Azusa, whom he perceives as more talented, fostering underlying insecurity about his own abilities.

Ema's arrival catalyzes significant development for Tsubaki. She helps him recognize his unique strengths, easing his rivalry with Azusa and fostering self-acceptance. This emotional growth sparks Tsubaki's romantic feelings for Ema. He initially expresses these through forceful advances, including pinning her down and kissing her without consent. His jealousy surfaces intensely when Ema interacts with other brothers, particularly Azusa or Fuuto; this is evidenced by his rage over a bite mark Fuuto leaves on Ema's neck.

Tsubaki's relationship with Azusa evolves from deep mutual reliance into a strained rivalry fueled by their competing affections for Ema. After Azusa interrupts Tsubaki's aggressive kiss with Ema, Tsubaki reacts coldly, refusing to engage. This fracture temporarily damages their bond until Azusa's hospitalization prompts Tsubaki to reconcile. He acknowledges Azusa's feelings while reaffirming his own love for Ema, stabilizing their dynamic into a blend of brotherly affection and romantic competition.

Following the hospitalization incident, Tsubaki reflects on his behavior and apologizes to Ema for his aggression, recognizing the potential harm. He shifts toward a gentler approach, prioritizing Ema's comfort over possessiveness. Though Ema declines romantic commitments from all brothers at the series' conclusion, Tsubaki vows to wait indefinitely for her affection. Special episodes depict his continued devotion, including a Valentine's Day fantasy where he envisions being bound to Ema by a red ribbon and a beach daydream where he kisses her as her boyfriend.

Notable trivia includes his left-handedness, a December 31 birthdate, a height of 176 cm, and blood type A. He is the second brother to kiss Ema and the first to do so intentionally, with two documented kisses: one during a moment of vulnerability and another by force. His name, Tsubaki, means "camellia," symbolizing youth or immortality.