I like where this is going actually.
It's funny and ironic simply because I don't like the "Anyone can Die" trope especially combined with "Break the cutie" and/or "Cosmic Plaything".
That being said because the pacing is fast it didn't spend too much time on Ruka and Alice's relationship but enough so the reveal gave you the 'What a bitch' moment instead of the 'Okay...and?' and not venturing into the 'Why the fuck would you do that?!' territory.
Seems like the 'Metaphorical Coming of Age Combat' genre. If that's a thing...not to be confused with "Action" and "Slice of Life" or "Drama" set in "Middle School".
Also...did research on what an Editor does...I dunno if I'd be capable enough since English is my 1st and only language but I'd PROBABLY give it a shot if my first attempt was good enough for a Translator. Which I doubt.
Not as close to "WTFAIR?" though as you'd think...it's closer to a Creepy Stalker that's watching "WTFAIR?" from a reasonable distance away and following it home. You just have to see if it decides to cross the line.