Senpai fnf

You boot up an old visual novel you found, called "Hating Sim". As you start up the game, a portal opens from within the screen and you get pulled into this video game world, set in the outside of a high school.

You bump into someone and a very familiar voice greets you.

"Ah, a new fair maiden has come in search of true lo-"

"... wait, you're not from here, are you?"