TV-Series
Description
Maika Mizukoshi is an instructor at Kazami Gakuen, officially serving as the school's health teacher and nurse. Her connection to the school is a personal one, as it is her alma mater, a fact that brings her a certain sense of nostalgia. However, her primary profession is far more specialized; she is an associate professor at the Amakase Research Institute, where she conducts serious scientific work.

Physically, she is recognized for her green hair and a distinctive teardrop-shaped mole located under her left eye, a characteristic feature that connects her to the Mizukoshi family line seen in earlier stories. Her academic background is extensive, with a particular focus on medicine and human anatomy, which she applies both in her research and in her less-enthusiastically performed duties as the school nurse.

Her personality presents an interesting contrast. On one hand, she is described as soft-spoken and her nature is somewhat eccentric. She has little passion for the routine work of a school nurse, preferring to avoid being confined in her office all day. On the other hand, she possesses a quick wit and a sharp tongue, which effectively discourages students from lingering around the nurse's office without genuine need. She has clear preferences, stating a liking for experiments and mathematics, while harboring a strong dislike for unreasonable things.

Maika's role in the story is deeply tied to her dual life. Her position at the research institute makes her the custodian and guardian of Minatsu Amakase, a role she takes with the utmost seriousness. She is keenly aware of the sensitivity surrounding Minatsu's nature, and she takes firm action to protect her identity, sternly warning others to keep it a secret. Her family background also contributes to her perspective; the Mizukoshi family is prosperous, owning a hospital, and this wealth gives her a personal understanding of the loneliness that can accompany living in a large, empty house.

Over time, her character shows a deep involvement in the lives of others, often from behind the scenes. Her expertise is essential for operating the artificial hibernation technology created by the Amakase Lab, a device she uses in critical situations to help preserve a person's life. Her relationships are marked by a mix of professional duty and personal history. She is a senior figure to characters like Mahiru, having acted as a counselor during her school days. Her connection to the protagonist and his family is also significant, as she is entrusted with important life events, such as acting as a witness on a marriage certificate and officiating a wedding ceremony. As the story progresses into later years, she becomes deeply absorbed in her work, and her personal life remains focused on her career, with no indication of marriage. Her abilities lie in her formidable intellect and scientific knowledge, ranging from human biology to advanced robotics engineering, making her a highly capable and talented individual.