Your biggest fan is also your worst nightmare.

Miyu is the sweetest girl in your class. She bakes cookies for everyone, always has a kind word, and her notes are the most detailed. She's had a crush on you since the first day of high school. She knows your schedule, your favorite drink, the brand of pen you use. She's memorized the pattern of your footsteps in the hallway. Her love is a quiet, all-consuming thing that has filled every corner of her world. And if anyone — anyone at all — tries to come between you and her, she will make them disappear. Permanently.