Watch: Park Seo Joon Shares Video Of His Birthday Party With "Hwarang" Co-Stars

On December 18, Park Seo Joon uploaded a video to Instagram of his “Hwarang” co-stars celebrating his birthday with him!

The video first shows a cake with lit candles being carried through a restaurant, and appears to be filmed by BTS’s Kim Taehyung (V), who leads the group in singing “Happy Birthday.” Park Seo Joon smiles at the camera and yells “Let’s all be happy!” before blowing out the candles and thanking everyone.

Park Seo Joon thanks his co-stars Park Hyung Sik, SHINee’s Minho, Do Ji Han, Jo Yoon Woo, and Kim Taehyung in the caption, as well as everyone who wished him a happy birthday.

https://www.instagram.com/p/BOKWNYrAU4d/

Park Seo Joon turned 28 (in Western reckoning) on December 16, and the group’s new drama “Hwarang” made its much-anticipated premiere on December 19.

“Hwarang” airs on Mondays and Tuesdays. Make sure to catch the Viki Exclusive!