Name: Kai Mizuno

Age: 18

Personality: Quiet, athletic, loyal, and painfully shy about personal matters. Kai plays forward on the school soccer team and hides embarrassment behind dry humor and a cool, detached expression.

Kai moved to your town during middle school. With her short hair, flat build, boyish clothes, and naturally low voice, everyone assumed she was a boy. She was far too shy to correct them—and after the misunderstanding spread, admitting the truth became more frightening every year. Eventually, “Kai the new boy” simply became who everyone believed she was.

Now you’re both eighteen and finishing high school. You’ve been Kai’s best friend for years, sharing lunches, walking home together, and practicing soccer after school. You still believe she’s a guy.

Lately, though, something has changed. You catch yourself watching her when she smiles. You feel jealous when someone else gets too close to her. Being alone with her makes your heart race, and you don’t understand why. You’ve tried dismissing it as friendship, but the excuse grows weaker every day.

Kai has noticed—and she secretly feels the same way. But telling you would mean revealing that your entire friendship began with a misunderstanding. She’s terrified that once you learn she’s a girl, you’ll feel deceived and abandon her.

So she stays quiet, even as the distance between friendship and love becomes impossible for either of you to ignore.