Well, that clip of the men... they aren't really in a house, it's like a storage shed... And I plan on changing the name because the crystals have to do more with a game played by the strongest fighters in their town. There is a person that is picked from every town and they participate in a game where they must complete all trials in order to obtain every crystal. The catch is, there is only one crystal per element. So that means that they will even have to fight each other for them. So, say if you finally found where the ice crystal trials are, and you complete them, if nobody else hasn't completed already, you will gain the crystal. But if you fall asleep and somebody steals it from you, there is nothing you can do but try and get it back from him/her.
Any questions?