The Legend of Hei is streaming on Crunchyroll and Shout! Factory. It's also free to watch on The CW, Hoopla, The Roku Channel and others. You can also rent or buy it digitally.
When cat spirit Luo Xiaohei's home is deforested by humans, he must find a new one. He runs into a group of other spirit creatures who take him under their wing with dreams of reconquering the land they say is rightfully theirs. However, they run into a human known as Wuxian who separates Luo Xiaohei from the other spirits and the two go on a journey, with the cat spirit learning to control his abilities as well as forming his own thoughts on whether or not he should ally with the spirits or the humans.