It's not an anime

It's from the painter Sayori's New Year's calendar "Neko Bible"

Sayori: female, whose real name is Cao Lu, was born in Hunan, China, and currently lives in Japan, and works as an artist in a game company.

People: chocolate, Vanilla

Black hair: chocolate (ショコラ)

Type: black cat

White hair: vanilla (also translated as Vanilla) (バニラ)

Type.