Why was the owner near a black dude.

Korea is still a polite society, which makes it difficult for their citizens (women and effeminate men mostly affected) to recognize the dangers of diversity when directly confronted by it. They prefer to adhere to social norms rather than exfiltrating themselves from an obviously dangerous situation. White people still suffer from this, too, even though our polite society is nearly all but gone, because we're being inundated with propaganda that makes racism and any form of White collectivism the worst evils imaginable, so in the minds of the brainwashed, it's preferable to remain in a dangerous situation than to be labeled a racist.