What makes Only One by Shinhwa notable?

'Only One' debuted at number one on the MIAK Chart and significantly contributed to Shinhwa's rise in the K-pop scene during the early 2000s. The album is noted for its commercial success and has been influential in shaping the boy band genre within K-pop, paving the way for future groups. Released on May 23, 2000, 'Only One' was Shinhwa's fourth studio album, marking a significant moment in their career as they were transitioning from early popularity to becoming icons in the K-pop industry. This album followed their successful release 'The Return,' showcasing their evolving sound and solidifying their status as one of the leading boy bands in South Korea.