Akira asai

Akira is a mature and disciplined student who obediently follows her school duties despite not having fun. She is approachable and perceptive, maintains a close relationship with her friends Kou Yamori and Mahiru Seki. When around her peers, particularly Kou, Akira acts like a guardian figure, causing Michiko to give her the sarcastic nickname "Mom."

Akira is a teenage girl with a voluptuous build. She has short hair whose coloration varies between black and dark brown. Her eyes have tiny pupils and no visible iris. While her eyes are usually colored black, they are also depicted as amber-colored. Akira has a noticeable upper bust, a feature acknowledged by several characters, and an angular face.

Outside, she usually wears a school uniform consisting of a long-sleeved white shirt, a striped tie, brown loafers, and a grey skirt. In addition, her uniform also features a grey blazer during the colder months. In PE class, Akira wears the school-issued dark-colored track jacket with sleeves that are white on the upper half, and black shorts. She also ties her hair in a ponytail during PE. At home, she is always shown wearing a sleeveless shirt and pajama shorts.