BTS' V, Park Seo Joon, Hyungsik, and Choi Woo Sik enjoyed a spa day together. 

On December 20, Park Seo Joon shared photos from the spa day with his celeb friends. He captioned, "In order to congratulate the one whose birthday recently passed and the one whose birthday is coming up, we have spent a short yet impactful day in midst of our busy schedules, and once again determined ourselves to work hard. It's a bit late but I want to sincerely thank my family, peers, and loving fans for the birthday congrats. I will continue to work hard to show the best of me wherever I go. I love you."

Park Seo Joon celebrated his 30th birthday on December 18. Meanwhile, V is celebrating his 23rd birthday on December 30.