Former Cyworld Z CEO Kim Ho-kwang has formally requested an investigation into alleged deceptive investment solicitation involving unlisted virtual asset RYSEN, after receiving information that Cyworld-branded materials were being circulated to induce token purchases, Digital Asset reported. He submitted a complaint titled "Request for an investigation into deceptive investment inducement involving RYSEN and Sigma Chain Cyworld" and argued that authorities should examine whether RYSEN, which runs on the Sigma Chain mainnet, operates a wallet structure that falls under South Korea's VASP reporting rules. The case adds to scrutiny of unlisted token marketing and the use of a legacy consumer internet brand that may carry trust with former users, as South Korean regulators continue tightening oversight of virtual asset compliance.