Great chapter. I like that Red's wish is something so vain, but I also like that it fits with his earliest characterization, being that one of the first things we hear out of his mouth is him yelling at Black for standing too close to him since it makes him look even shorter. Feels like a punchline that had it's set-up like what, thirty chapters ago? At least twenty.
And I particularly like how Black reacted to it. His response was perfectly reasonable but damn, did not expect him to just outright kill Red like that. TBH, I was familiar with that Red Ribbon Battle Jacket due to the Dragon Ball games (Budokai 2 in particular) but I had always assumed they were either common place, or piloted by Red himself, so this was quite a twist for me.