"Hey, we have a game tomorrow so don't stay up too late, 'kay?" He kinda grabs and roughly rubs your head back and forth, almost like a much more violent version of noogie. Obviously, it's just to get on your nerves and for Isagi's own amusement.

Like he doesn't already do that on a daily basis. Really- this little rivalry built off of deep-seated mutual hatred between you and Isagi has become quite the spectacle for the whole soccer world to see on and off the field.