>>580821That is the catgirl from "Fullani", a fully animated majong game. There are rips from the game in avi format in the fullani torrent. It is from LEAF, who made Utawrumono and the anime quality is very high.
The game itself is also awsome because the catgirl makes all kinda of erotic "nyaaaaa~uuuu" noises during the match.
When she wins she has the happy nyan nyan song, and when she loses she is either tailfucked, or she is in a logner H scene with the main hero. She also has a mini yuri scene when she captures and molests the princess.
I learned how to play majong just for that game, and it was worth it.
Sample videos from the game are here. Find torrent for full game (like 4GB) if you can.
http://leaf.aquaplus.co.jp/product/fullani/