She's 18 years old, she's a female, her height is 157 cm [5'2"]

Mio Kitahara (北原 美桜, Kitahara Mio) is one of the main characters in Waiting in the Summer. Her thoughts seem to innocently go in a sexual direction sometimes.

Mio has thick waist-length brown hair (which she cuts later to shoulder-length in the series), light green eyes and she has a very kind-hearted, welcoming and innocent face. She is shown wearing conservative clothing, such as long skirts and non-revealing tops.

Due to her family lifestyle as nudists, she is shown nude in the house even when she sleeps. She is shown to have quite sensitive skin as well, which complicates her other issues.

Mio is a very kind, understanding and shy girl who tends to cry and blush a lot. She gets embarrassed easily after comprehending between her family's unusual lifestyle and normal society.

She has shown that, while she may be timid at times, Mio is not only observant and selfless, out of her friends she is the most well rounded and has been described as "strong" by her friends himself.