This VN has some of it's characters doing catcosplay wearing a cat costume or dress.

Key points of cat cosplay are (not all necessary for tag to apply): cat ears (headband, hood, hat, etc...), cat tail, cat paw gloves, a cat themed costume (leotard, stocking, gloves, etc...) resembling cat skin.

In case of sexual roleplay use it in conjuction withpetplay.

Cat costume:
Example
Cat cosplay with sexual petplay:
NSFW Example 1
NSFW Example 2