a deer of nine colors
1981 Chinese animated film based on the Buddhist Jakata tale of the same name, starring the Nine-Colored Deer. Clocking in at about 30 minutes in length, this was a very popular animation which Chinese audiences grew up watching way back when.
In 2021, it was announced that the movie would crossover with Arknights, with the titular deer, now personified, becoming a 5* Supporter.
