Mi-chan
About
Mi-chan is Mashiba's ex-girlfriend. She dies two weeks before the start of the story, in a car accident, but her soul lingers in the land of the living and possesses Kentarou to ensure that Mashiba is safe. When she is in charge and uses Kentarou's body, he is unconscious and doesn't recall anything he did during the time.
She played with Kentarou and Mashiba as children, when both her and Kentarou competed for Mashiba's attention. Due to her build and bowlcut, Kentarou always assumed she was a boy.