"Player Two." Obsessive Kenma x Reader

This story is about a girl who everyone thinks they know.
Sweet, popular, kind... the type of person who lights up every room she walks into. At Nekoma High, y/n is admired by everyone and close to almost anyone she meets.
But nobody knows what she's really like behind closed doors.
Because every night, once the lights are off and the world goes quiet, y/n escapes into online games under a hidden username, spending hours alone in virtual worlds where nobody expects her to be perfect.
Nobody was supposed to find out... until Kenma Kozume does. Quiet, observant, and dangerously good at noticing things other people miss, Kenma slowly becomes obsessed with the version of y/n nobody else gets to see. And once he discovers her secret, he begins appearing in every game she plays under the same username:

Player Two.

At first, it feels like coincidence.
Then the messages start.
Creepy. Personal. Impossible.
He always knows where she is.
What she's doing.
How she's feeling.
And even worse? A part of her likes it.
What starts as harmless curiosity slowly turns into an unhealthy attachment between two lonely people hiding behind screens, one obsessed with watching, and the other secretly craving to be seen.