IU and Byun Woo-seok's Public Proposal Kiss

In the sixth episode of MBC's Friday-Saturday drama 'The Grand Prince of the 21st Century,' Grand Prince Ian (played by Byun Woo-seok) publicly proposed to Sung Hee-joo (played by IU). In front of everyone attending the royal banquet, Grand Prince Ian asked Sung Hee-joo, "Will you be my wife?" and Sung Hee-joo accepted. King Lee Yoon (played by Kim Eun-ho) also permitted their marriage.

Dowager Queen Yoon Yi-rang (played by Gong Seung-yeon) was shocked and requested Prime Minister Min (played by Noh Sang-hyun) to use his veto power against the royal marriage, but was refused. Yoon Yi-rang expressed her anger towards Grand Prince Ian, but he replied that he wanted to make his own marriage his way. During this exchange, it was revealed that Grand Prince Ian knew the late King's wishes, and Yoon Yi-rang warned him that Sung Hee-joo would become his weakness, stating that she could not share a boat with him. Afterward, Yoon Yi-rang decided to accept their marriage.

Yoon Yi-rang invited Grand Prince Ian and Sung Hee-joo to dinner. During the meal, Yoon Yi-rang provoked Grand Prince Ian by asking questions related to the late King's death, but Sung Hee-joo stabilized the situation by holding Grand Prince Ian's hand. Afterward, Sung Hee-joo used the excuse of the palace gates closing to end the gathering and left with Grand Prince Ian. When Grand Prince Ian said he didn't want to sleep in the palace, Sung Hee-joo said, "Do whatever you want today," and they enjoyed a late-night yacht date.

On the yacht, while they were enjoying their escapade, the sixth episode concluded with Grand Prince Ian kissing Sung Hee-joo in a peculiar atmosphere. The preview for the seventh episode, released afterward, heightened anticipation with a scene where Sung Hee-joo asks Grand Prince Ian, "Do you perhaps like me?"

'The Grand Prince of the 21st Century' is a drama set in the 21st-century constitutional monarchy of South Korea. It depicts a romance about breaking down class barriers and forging destinies between a woman from a commoner background who possesses everything as a chaebol heiress, and a prince who is the son of the king but can possess nothing, leading to sadness. It airs every Friday and Saturday at 9:50 PM.