Known as the Ultimate Programmer, Chihiro is a genius-level talent. Chihiro suffered from severe bullying as a child for being "too weak" for a boy. To escape this harassment, he began cross-dressing as a girl. Over time, this became a deep-rooted "weakness complex" that he desperately wanted to overcome. Chihiro is characterized as incredibly meek, timid, and kind-hearted. He is a pacifist who wouldn't even hurt a mosquito and often apologizes for small things. He is one of the shortest characters in the series, standing at just 148 cm (4'10"). He has a very lithe, petite frame that makes him look younger than his classmates. In reality, he's 19. He has short, light brown hair that is layered with several wispy strands and cowlicks. His eyes are a matching hazel or greenish-brown color. Chihiro wears a dark-green winter school uniform that includes a long-sleeved dark green jacket over a white shirt. The shirt features a large Peter Pan collar secured by a thin dark ribbon tied in a bow, a brown knee-length pleated skirt, and He wears black thigh-high socks and simple white Mary Jane-style shoes.