Saki was born with a weak body, which caused her to be hospitalized in middle school. Her older brother, Tsukasa, took care of her all this time. By the start of the main story, she was healthy enough to attend high school. Saki is determined to enjoy her youth and try all the things she couldn't while she was in the hospital. Because of this, she sometimes becomes overtired and feels ill. Saki and Tsukasa's mom is also a piano teacher. Saki has pink eyes and long blonde hair with pink tips. She wears it in two ponytails. Her daily outfit consists of a loose white blouse, layered with a creamy pink sweater with a pink thin ribbon, a light blue denim skirt, black shoes and pink socks. Saki is a cheerful girl who never stops smiling . She likes fashion and seems to like the gyaru style and subculture. Saki wants to take advantage of his years of sadness and loneliness by spending time with his friends and writing music.