I don't know if I'm reading it wrong or something, but why is the pronoun use for a singular character a plural, like the panda on the first few chapters was referred to as "them" instead of him or itself. or was there some kind of theory or reason for it

i think dragon-tiger breath(then the number of the style) instead of breathing could have been more reasonable, and using two creature as a technique actually made it harder to pronounce the style properly,

Try to improve your writing proficiency first before writing a novel, even if it's just a fanfiction. I tried reading a few, but I can barely understand what's happening, if I did not know the anime myself I'm sure I won't even reach chp 2