Strong in both neutral and allows for setplay. 5S (baumkuchen) is a situational anti-air helping cover the spots where Kuroko’s 5B cannot, but they also allow you to safely approach or as a combo extender. Cats are a great oki tool that allows Kuroko to safely use 236X to continue stagger pressure, or provide multiple tick throw/high-low mix ups. This is especially good when in potential as iad mix ups become hard to see with all the cats running around. Pressure aside, it also minimizes your opponent's movements keeping them pinned down.
Strong lockdown in 5S, this allows Kuroko to charge up potential off of any 214AB knockdown. The gunshots also obscure vision making high-lows good while in potential as the light from both the guns and Kuroko make it hard to see.
Lots of synergy with Kuroko providing strong lockdown with 5S and more up time on potential with 6S. 6S is mostly niche and won’t have much use, but being able to stay in potential just a bit longer can be a deciding factor in a match. The main attraction to this assist is her delayed gunshots that pack a lot of damage and control. Kuroko is able to utilize this to bolster her own damage, and she has all the tools to set up each of the requirements to enable the next gunshot to fire.