The bereaved family of the late Kim Sae-ron has filed a complaint against actor Kim Soo-hyun for alleged violations of the Child Welfare Act. The family asserts that Kim Sae-ron and Kim Soo-hyun dated from middle school through university and released an audio recording of Kim Sae-ron made during her lifetime. However, Kim Soo-hyun's side maintains that the recording is fabricated and appears to have been created using AI or similar technology. Kim Soo-hyun stated he plans to file a counter-complaint and report the family for defamation. The case began when YouTube channel "Gaseyeon Lab" claimed that Kim Sae-ron dated Kim Soo-hyun for six years starting from age 15.