Description

The stepsister of the protagonist's best friend. She is a beautiful, cheerful girl. She is the idol of the school and many people have confessed their love to her, but she refuses them all.
She often teases the protagonist's best friend as his sister, but secretly she likes him as a man. However, since she has spent most of his life as his big sister, she cannot be honest with him.
She hates the protagonist because he is a bad influence on her brother.