Haruna Inui

Mikki's classmate and the "leader" of the girls. She can be quite egoistic and causes Mikki some trouble at the beginning, but eventually naturally becomes a part of Mikki's circle of friends. After truly getting to know Mikki and the others, she is shown to be actually nice and caring, she considers Mikki and everyone her best friends, and says that they will all definently be friends even after they've all graduated to Middle School, and cries after recieving their Farewell Card in Chapter 24.