TV-Series
Description
Mitsuki Ōshiro is a supporting character in the series. She is a teenage girl who stands out for her tall stature, with a lean and athletic build. She has burn-orange hair cut to neck length and crimson eyes. Her usual school attire consists of a light orange sweater vest worn over a white dress shirt with a red bow, a black skirt, white stockings, and brown penny loafers.

Mitsuki is defined by a sharp contrast between her appearance and her temperament. Her height and build give her a physically imposing presence, but her personality is that of a nervous and deeply shy girl. She blushes very easily and frequently wears a worried or flustered expression. She is extremely self-conscious and has a complex about her height, often feeling that she does not look feminine enough and worrying that she might come across as intimidating. This insecurity makes her timid in social situations and causes her to keep a low profile whenever possible.

Her primary motivation is her fierce, protective devotion to Reina Aharen, her childhood friend. The two have known each other since elementary school, and Mitsuki is one of the few people who naturally understands Reina's difficulty with judging personal distance. Her deep affection for Reina drives almost all of her actions. She positions herself as Reina's self-appointed guardian and watches over her from a distance with intense vigilance. When a new friend, Shota Raido, begins to grow close to Reina, Mitsuki becomes highly suspicious and views him as a potential threat who might cause Reina trouble. She initially follows and observes them from afar in a manner that can seem menacing, though her intentions are rooted in sincere protectiveness rather than malice.

Within the story, Mitsuki serves several roles. She is a comedic foil whose nervous and overly serious surveillance of Raido creates humorous situations. She is also a buffer who adds a layer of conflict to Raido and Reina's developing friendship. Over time, as she witnesses Raido's genuine kindness, her stance softens and she begins to accept him as an ally rather than an adversary. This shift marks her primary development: learning to trust someone else with Reina's well-being and slowly coming out of her own shell.

Her key relationships revolve around Reina and Raido. With Reina, she shares a deep, wordless bond built on years of companionship, and she is willing to go to great lengths to support and protect her. With Raido, the relationship evolves from suspicion to grudging respect and eventually to mutual understanding as they both care for the same person.

Notable abilities include impressive physical strength and fitness, honed through boxing exercise, which makes her capable of fast and powerful movements. She is also adept at hiding and following others without being noticed. Her parents run a hair salon, and she has inherited professional-level skills in haircutting, styling, and makeup, which she occasionally uses to help Reina and other friends.
Cast