Alright, Reap. A few things first.

1 - I'd like for you to list what those languages are. English and Japanese are sort of a given (I assume English is her mother tongue). What are the others, and how good is she with them? For example, can she make conversation in those other languages, or is it just enough that she can understand the gist of what is being said, but is unable to speak it herself? Since she's only 19, I'd suggest you stick to one, perhaps two, more languages. But if you pick two then it should only be "can understand a bit of what's being said" and not being able to make conversations. A large part of the world speaks English, so it's likely that she and her father used English more often than not.

2 - Her fire manipulation/conjuring. How much? As in, how much fire can she conjure, and what are the limits of her control? She was trained as an assassin, so I assume that she specializes in discreet use of it, and small amounts. Regardless, I'd like for you to specify so that we can get on an even page and avoid her burning down the forest, and me facepalming because then I'd have to scold you for Powerplaying (:p).

Aside from that, I don't see much wrong with your character. The only other thing might be that I'd like a little more in her Background. It makes the requirements, but I'd still like a little more about her time in the Dojo, and her childhood. 

@Pathfinder
I'll get to your character once you've finished it.