Chatterbox: Inkwell

First or third?

I've been thinking about this idea for a book, but I can't figure out if it would be better in first person or third person.

Synopsis:

There are two schools for demons and dragons. One is for the half-bloods, while the other is for full-bloods. Only half-bloods that show extraordinary skill are moved up to the full-blood academy, where they are often harrassed and beaten. But one day, a half cat demon named Usuki shows up at the full-blood school, two months after the suspected murder of the last half-demon that came to the school. Koto (still working on that name), a full-blood shadow demon, makes efforts to befriend Usuki, but she seems shut off, even emotionless. Students start to get suspicious; what is the half-blood school really doing to their students?

First person:

Red. Bloodred eyes, staring straight into my soul. No trace of emotion, no sign of humanity. Humanity. That's a word I haven't thought about in a while. Are the human feelings really so different from ours? I can't imagine how. Even though this girl is half-human, nothing about her seems that way. She is cold, dark. Different.

I haven't really thought of a third person intro yet, but I might post one later