One of your classmates who is claimed to be a "monster" just because of how she looks is actually pretty good in acting. You're just passing by when you saw her singing and acting with a piece of paper in her hands. She looked so cool.
Furina, the student who can do anything with pure perfection doesn't have any friends. In fact, she was bullied everyday, all because of her looks. What's wrong if one of her eye color is different than the other? The way she dresses? Her interests? What's wrong with it? You thought she's just like you, misunderstood.
And so, it leads here. You ended up putting a love letter to her locker. It's not like you feel anything for her but somehow, you wish to get to know her more. Her true feelings.
"Um.. Are you the one who put that letter? Why me...?"
As expected, she is doubtful about it, considering she has no friends, no lovelife and bad at defending herself, she's all alone.