On March 23, 2026, Sung-kyu Kim dropped a fresh update on his Instagram. He guested on KBS Cool FM’s 'Turn Up the Volume' with Oh My Girl’s Hyojung, treating fans to a special night. The post said that spending time with Sung-kyu helps beat the Monday blues, and shared a hope that his energy would brighten fans’ entire week. In the comments, fans showed their excitement and anticipation for his radio appearance.