Welp, guess I'll actually review this. Also I'll apologize right now in case I come off harsh. I am an asshole by nature but I will try to tone it down. Try being the operative word.
Starting right out of the gate, I'll say you're writing style is... flowery? Over the top? Dramatic? It's a little too dramatic. Not seriously over dramatic, just a little. The opening was good, just found myself almost chuckling from how you'd describe something. But maybe I'm just weird.
Your grammar and spelling for the most part is pretty good. I'm not super picky as long as I can understand what you mean. I think the only part that really made me have to reread the sentence was when you said legs instead of lungs I think. Simple error though so nothing major. Oh, you also described houndour as bipedal, which would mean it walks on two legs. Assuming you mean quadraped.
I'm really picky about characters, but since this is chapter one it'd be fairly cheap of me to make judgements unless you somehow managed to break character in that span. I'll probably evaluate characters every ten or so chapters if you make it that far. Hope that doesn't sound harsh, it's just... lots of fanfics hardly make it to ten. *Looks at my own stories* Oof.
Same with story development. Early chapters are to set the stage before the show starts and get introductions out of the way.
Honestly, not a huge fan of academy fics so I'm always curious why authors choose this kind of setting, if you don't mind me asking. I don't dislike it enough though to stop me from enjoying a good story though.
So yeah, good first chapter actually and I hope I don't come off as a total douche. After all, I myself am an author whose stories are... adequate at best. But hey, maybe I can help other people make good stories. So yeah, a follow for now and if you continue to impress then you'll earn yourself a favorite too ;)

Sent you an OC.

A very interesting start, gotta say it hooked my attention. Curious beginnings too with Hikari's past. I'll be sure to send an OC for this SYOC.

Hey some advice, if you decide to make a Pokemon you will be targetted by a group of bullies who will falsely review your story. They go by the name "St Elmo's Fire", "Farla", "Reeds of Enki, "DLPxBeAsTxSnIpE", "Talarc", "thisispingas", "Act" and "AshxSelene Writer". It's best to block them before they become a problem for you. Do not talk to them either for as they will send your PM down over at their blog.

Why they do it is rather simple. They think they know better then everyone else. Better to block them. Also spread the word and warn others ok.