In many inner cities, there’s a lot of resentment between Korean-Americans and black Americans.
OTOH, there is a decades-old black fanbase for Chinese, Japanese, Korean, and Thai martial arts, animation, and musical groups. Black martial arts films and groups like the Wu-Tang Clan are evidence of this.
So although individual black people who are fans of anime, K-drama, and K-pop are not super-common, it is common for there to be such people around – probably about as common as white and Asian fans are among white and Asian people.
So here’s somebody doing a story about it.