Huh, personality determines power...That can only lead to good things.
Crazy things, but good things. I'm pretty all over the place myself, So who knows what one I'd end up being best with.
As for everything else, especially the concept and plotline, it's all pretty nice.
The replica of the first floor of LoT was a nice little reference, did you do it from memory?
As for the MC's link, how about a set of Generic Enemies?
Like the Mr. Ghosty, Kedama, Fairies, etc. Until the personality is more fleshed out and such.