Black Cat of Bad Omens

Chen (チェン, from Chinese 橙, literally "orange") is a cat(girl) shikigami from the Touhou Project who debuted in Touhou Youyoumu: Perfect Cherry Blossom. Her designated realm (at least, ingame) is the Japanese folklore realm of Tohno, said to be with great riches (yet inescapable), where she cares for stray cats and fends off intruders, especially if they plan harm to cats.

She serves Ran Yakumo, who, in turn, is a shikigami for Yukari Yakumo, so they are often considered one family to fans. Chen, however, is but a side character/"child" of Ran.