Akira Oono (大野 晶) is a main heroine in High Score Girl.
Oono has long dark purple/black hair, reaching to the top of her back. She typically wears a purple dress with puffy sleeves. It has ruffles on the chest, and a string bow on her neck. For footwear, she wears brown buckle shoes and black stockings. She wears this outfit in all of her elementary, middle, and high school years. When outside, she wears a yellow sweater over her dress. In middle and high school, she wears the typical uniform from both schools.