It's a bit of a stretch, eh? Hey, it's Easter, he's a rabbit. It totally works, man!
Seriously, I have to admit, I know little about Usagi. I think he crossed over with the Ninja Turtles a few times when I was a kid, but that's about it for my exposure to him. Yet he's somehow become a character I love to draw. Something about a samurai bunny just appeals directly to my sensibilities. One day I'll have to check out some of his comics.