OVA
Description
Mimi Usa is a fictional character from the anime and manga series "Kodomo no Jikan." She is a 10-year-old student in class 3-1 (later 4-1) at Futatsubashi Elementary School. Physically, she stands 148 cm tall, weighs 42 kg, and has measurements of B80-W68-H78. She possesses brown hair and brown eyes, frequently wears glasses, and is the tallest and most physically developed compared to her close friends Rin Kokonoe and Kuro Kagami, despite sharing their age.

Naturally quiet and shy, Mimi Usa's initial reluctance to speak led classmates to perceive her as aloof, causing them to distance themselves. This resulted in her forming a friendship with Rin and Kuro during a physical education class, establishing their close bond. Her personality contrasts sharply with her friends' outgoing and sexually aware natures; she exhibits significant childhood innocence and naïveté, often reacting with confusion or embarrassment to sexual innuendo. This naïveté persists despite her physical maturity, creating a recurring source of conflict. Her homeroom teacher, Daisuke Aoki, along with Rin and Kuro, frequently intervene to shield her from inappropriate topics or situations, such as discussions about lolicon culture or harassment.

Mimi Usa's background involves significant familial neglect. Her supportive father moved away for work, leaving her without a key emotional outlet. Her mother shows clear preference for Mimi's older brother, leading to neglectful abuse. For instance, when Mimi reported being approached by a molester, her mother blamed her and changed the subject. This neglect forced her to handle age-inappropriate challenges alone, such as purchasing her first bra without guidance, causing physical and social discomfort. Her mother also pressured her to quit cram school and attend public school like her brother, further undermining her aspirations.

Academically gifted but athletically challenged, Mimi Usa excels in studies while struggling in sports. Her emotional fragility stems from bullying by her former homeroom teacher, Nakamura, whose verbal abuse caused her to stop attending school temporarily. She only returned after Rin orchestrated Nakamura's resignation and Aoki became the new teacher. Aoki earned her trust by believing her experiences without judgment, becoming a reliable adult figure. Despite this, Aoki's focus on managing Rin and Kuro's behavior sometimes leads to Mimi unintentionally receiving less attention.

Her character development includes a secret romantic interest in Reiji Kokonoe, Rin's cousin. She fell for him at first sight and received encouragement from him to remain hopeful about finding understanding and love. With Rin's blessing, she confessed her feelings, though she also noticed Reiji's complex emotional attachment to Rin, sparking concerns for her friend's well-being. Mimi Usa also demonstrates growing perceptiveness, such as being the only one to recognize Kuro's romantic feelings for Rin, and she supports Kuro emotionally in this unrequited affection.

Mimi Usa's struggle for self-identity centers on discomfort with traits that make her stand out, such as her height, intelligence, and physical development, fueling self-consciousness and depression. A pivotal moment in her growth occurred when Aoki posed as her brother to accompany her to a magazine photo shoot, an opportunity representing a step toward assertiveness. Her published photo remained unrecognized even by Kuro, symbolizing her quiet yet ongoing journey toward self-discovery.