[@Ariamis] Looks good so far. Having an esper who was successfully attacked and lost something to a monster (that wasn't their parents) before they were an esper is uncommon, so I'm glad to see that in her backstory. 

It looks like you're having some problems with the formatting. I had made an error with the example sheet and put SENTINEL in both the Instrument and Style fields, but the correct name for the Instrument attribute is RANGE.

I'll hold off on making any more comments until you're done.