If the author's note in the description really is the translation of an author's note, then Word of God says it's not gay.
TBH I don't know if I've ever seen a disclaimer quite like that before XD But if the author's gonna say, ''naw, they're just REALLY GOOD FRIENDS OKAY" then I'm willing to roll with it.
I mean, I guess on principle, I wouldn't want to deny people the right to love each other in an intense yet platonic fashion, if that's what suits them. It checks out.
* * *
...Anyway, all that babble of mine aside, this seems really quite intriguingly written in the first chapter. I like it.