Shit, I'm not ready for Kaori dying
Yeah, stories like this have a fork in the path:
A) It looks like [Character] is dying, but, miraculously or otherwise, they don't die.
B) It looks like [Character] is dying. They die.
In both cases it helps to have enough character-development time to either set up some plausible reason the character doesn't die or to reconcile the readers to the fact that they inevitably will. Not sure we're going to get that development here.