The World Begins With You

I beat The World Ends With You. Its a cool game. I'm doing the secret episode right now which I am stuck on because I have to fight a bunch of bosses and stuff. Also I have these new pins which I have no idea what they are for. I have a pin called Eiji the Prince... It does absolutely nothing and it is a level 1 pin. So somehow is does do something. It is worth 50,000 yen but if I raise it to the max level it may be worth 99,999,999 yen on the game. Hmmm... anyways does anyone want to pin tin slam?!