Recently, controversy has arisen after a complaint was filed requesting the cancellation of IU's concert at the Seoul Sangam World Cup Stadium following remarks by Son HeungMin.

On September 11, a netizen who identified themselves as a fan of Son HeungMin posted a request on an online community asking Seoul City to cancel IU's concert. The netizen argued that the encore concert scheduled for September 22 at the Sangam World Cup Stadium could deteriorate the condition of the grass, which might affect the '2026 FIFA North and Central American World Cup' third qualifying match between South Korea

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