This is self explanatory.

Scenario A: You were hit by a quirk, and the next day, you started to sprout Neko ears and a tail!

Scenario B: Basically Scenario A but (OC) and (Crush)'s roles are swapped.

Scenario C: You were hit by a quirk, and the next day, you started to sprout wolf ears and a tail!

Scenario D: I think you get the gist, but just in case, Scenario C but (OC) and (Crush)'s roles are swapped.