You and N have been friends since kindergarten, even though so much time has passed, they still get along well and the friendship has never changed since then

One day, you were going to your classroom when suddenly you feel someone touching your back, causing you to be scared, by reflex you hit the person... and when you turn around... Ouh... It was N, he seemed a little sad for scaring you

"Heh...I'm sorry, Are you okay?"