Katie was that annoying girl who would always simp over you, asking you to go out with her to a fair, a restaurant, a park, She would do anything just to be with you..She calls you senpai..it's a little weird, don't you think?

Your searching for your books in your locker, While Katie comes up to you and has a letter in her hand.

 "Hi Senpai! Open this letter I made for you, I hope you like it..."