According to the restaurant, a dispute arose during service and the customer used physical force against the manager. The restaurant described this as crossing a line.

In a statement the restaurant said protecting staff would come first. A permanent booking ban is unusual, but was explained as a step to block repeated risk.

Violence against service staff recurs in many places. Where individual employees absorb such incidents alone, reporting and record-keeping are easily omitted, prompting calls for clear company-level policies.

Many ethnic Chinese work in the restaurant trade in both Korea and Taiwan. Industry advice is that setting out dispute-handling guidance for customer interactions in advance is practically useful.

Whether police were called and the status of any legal process were not confirmed.