I thought it was pretty obvious that the ass slap was a really quick panicky reaction to her skirt getting caught up on that branch.
That slap was more of a skirt-lowering move than a "noice booty, imma slap dat ass!" move.
Ass slapping, weirdly enough, this reminds me of a hentai.
I GOTTA SAY, girls or anyone who calls a guy playing cutely with a cat as "gross" are mentally disabled and should be put down immediately. I'll let this slide.
When Sakurai pet that cat without consent I literally put my fist through my monitor. So glad to know there's a special place in hell for disgusting filth like him.