Higadera Nanatsu♀

The protagonist’s childhood friend who has always been in the same class with him since elementary school. She is easy to get along with and willing to talk about anything. She is a crude girl with a sharp tongue. She is always hungry and often eats. Her personality is as bright as the midsummer sun, and she is bad at keeping still. As a swimmer, her shortness bothers her. She likes penguins.