Byeon Woo Seok's 21st Century Prince OST

Actor Byun Woo-seok will participate as the final artist for the OST of MBC's Friday-Saturday drama 'The Grand Prince of the 21st Century.' Kakao Entertainment announced that the OST, personally sung by Byun Woo-seok to match his character 'Prince Ian,' will be officially released on the 15th. This song was a 'hidden card' not previously included in the OST lineup and garnered attention after its surprise reveal in the preview trailer immediately following the broadcast on the 9th.

This OST, which captures the deepening emotional connection between Prince Ian, played by Byun Woo-seok, and Sung Hee-joo (played by IU), is spreading rapidly on social media and online communities despite only a portion being revealed during the broadcast. Byun Woo-seok previously swept domestic and international music charts with the OST 'Sudden Shower' for the tvN drama 'Lovely Runner.' This OST is expected to further expand Prince Ian's emotional depth through music, enhancing the romantic mood.

The drama 'The Grand Prince of the 21st Century' is a romance about breaking down social barriers and forging destiny, set in a fictional Korea with a constitutional monarchy in the 21st century. Only two episodes remain until its finale.

According to drama brand reputation big data analysis for May 2026, 'The Grand Prince of the 21st Century' ranked first. The Korea Corporate Reputation Research Institute stated that the brand reputation index for 'The Grand Prince of the 21st Century' was 5,111,258 based on analysis from April 12 to May 12, 2026.

In the link analysis for the 'The Grand Prince of the 21st Century' brand, 'to be a hit, to pioneer' were analyzed as high. Keyword analysis showed 'Byun Woo-seok, IU, OST' as high. Furthermore, the positive response rate was analyzed at 90.58%, indicating a high level of viewer favorability.