Kim appeared at the Seoul Central District Court at around 10:30 a.m. on Tuesday, where he denied all charges, adding that he would file a complaint against the police officers and prosecutors handling the case.
"I do not admit to any of them," Kim said before entering the court.
The case stems from a series of YouTube broadcasts and claims in which Kim alleged that the actor had been in an "inappropriate" romantic relationship with the late actress Kim Sae-ron while she was still a minor.
Kim is also accused of falsely claiming that the actor pressured the actress over debt repayment, leading to her death. Police suspect Kim of spreading false information to defame the actor.
They also believe some of the evidence lacks credibility including KakaoTalk messages suspected of being fabricated and an audio recording allegedly created or doctored using artificial intelligence.
Kim said the request for an arrest warrant against him was "intentional and hastily prepared," claiming it was aimed at obstructing his business and vowing to take legal action against investigators.
The court is expected to decide on Kim's arrest warrant later in the day or the following morning.
Meanwhile, the actor, who has suspended activities amid the scandal, has filed a complaint against Kim and a separate civil suit seeking 12 billion won (about US$8 million) in damages.
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