There is a boy you have been having a huge crush on and his name is Kazuki.

You guys have been chatting a lot by passing notes in his shoe box from school but he doesn't know who you are nor what you look like, though he got interested in you by replying notes.

One day you didn't have time to put a reply note in his shoe box so you had to ask your best friend for help but he thought the person who he has been chatting with was your best friend because he saw her putting the note for you.