OVA
Description
Hikari Hazakura is a twenty-two-year-old physical education teacher who appears in the series. She is initially an instructor at Kawakuma East High School, where she also serves as the advisor for both the student council and the swimming club. Later, during the Kurisu Kurumi narrative arc, she is shown working at Sakigawa High School. Her physical appearance is notable for her sun-kissed, tanned skin, which is a result of her athletic lifestyle and features pale tan lines from wearing a swimsuit. She has a lean and athletic build, with shoulder-length dark hair that she often ties back in a half ponytail secured with a white ribbon, complemented by bright blue eyes. Her measurements are recorded as 88-56-87, and she stands one hundred sixty-four centimeters tall, weighing fifty-three kilograms.

Her personality is bright, energetic, and mischievous, with a carefree and somewhat rough-around-the-edges demeanor. She has a playful and prank-loving nature, which makes her popular with her students, who appreciate her open-mindedness and sense of humor. Despite her outward confidence and tendency to be a troublemaker, she displays a surprising shyness and clumsiness when it comes to genuine romantic intimacy or mature situations. She often takes the lead in teasing others but tends to falter and become flustered when someone else takes charge, leading her to try hard to maintain control of the dynamic. She is known to be a jerk with a heart of gold, hiding a kind and caring core behind her boisterous exterior.

Hikari was raised alongside Takashi Takahashi and Nana Nanjo in the same apartment complex, and she has been close friends with Takashi since childhood, affectionately calling him Taka. As a child, she was often the leader of their mischief, enjoying playful wrestling with him and even coaxing him into trying on girls' clothing. She initially viewed him as a younger brother figure, which made her gradual change in perception a significant source of internal conflict. As the story progresses, a series of accidental and ecchi-filled incidents cause her to begin seeing Takashi not just as a childhood friend, but as a young man. This realization is destabilizing for her, and she struggles to reconcile her bold, brotherly teasing with her new, unexpected romantic feelings.

Her role in the story is centered on this evolving relationship with Takashi. A key turning point occurs during a joint school festival between the two high schools, where she is forced to confront her budding emotions. The dynamic between them transitions from a familial, teasing bond where she is the clear leader to a more tender and mutual partnership as she learns to accept his growing maturity and her own shifting heart. After a series of embarrassing and heartfelt confessions, their relationship deepens, and by the time Takashi graduates, they are officially dating.

In terms of ability, Hikari is a capable amateur swimmer, which accounts for her excellent athletic skills and physical strength. She is highly energetic and not shy about engaging in dynamic physical activities. Her athleticism is a defining trait, shaping both her career as a coach and her playful, physical interactions with those she is close to.
Cast