Okay first off Im hopless, can someone tell me how to open your armory?

I put something in their by mistake and want to take it out but I cant seem to find how you open the armory.

Please help me.

Explore -> Sacred Lands -> Battle Coliseum -> Armory

http://www.subeta.net/games/battle/armory.php

What said, or: Subeta tab -> Games -> Battle Coliseum -> Armory

Thanks you guys