As X1’s Kim Woo Seok rang in his 23rd birthday, fans celebrated the occasion by taking over Twitter with an outpouring of love for the idol!

Kim Woo Seok officially turned 23 years old (by international reckoning) on October 27, and shortly after midnight KST, his fans began trending numerous hashtags related to the idol in honor of his special day.

As of 1:32 a.m. KST, three of the top eight worldwide trends on Twitter were dedicated to Kim Woo Seok, including two Korean hashtags playfully riffing off the singer’s nickname “Jjallang-ie.” A hashtag translating to “We love Kim Woo Seok’s birthday” was at No. 2 on the list, #HAPPY_WOOSEOK_DAY at No. 5, and a hashtag translating to “Happy Birthday to our beloved Woo Seok” at No. 8.

Fellow UP10TION member Lee Jin Hyuk also took to Instagram at midnight to wish his bandmate a happy birthday. The idol posted a photo of a street ad celebrating Kim Woo Seok’s birthday and wrote, “I happened to see this while walking by, hehe. Happy birthday.”

X1’s official Twitter account joined in on the celebration by posting an adorable baby photo of Kim Woo Seok and writing, “HAPPY BIRTHDAY WOOSEOK. Today is X1’s Woo Seok’s 24th birthday [by Korean reckoning]! Woo Seok, who asked ONE IT [X1’s fandom] to join him by leaving traces of themselves in his future footprints. In order to make Woo Seok’s 24th birthday a footprint of a happy memory, ONE IT, please imprint your traces deeply today.”

?HAPPY BIRTHDAY WOOSEOK?

오늘은 X1 우석이의 24번째 생일입니다!

앞으로 있을 발자취에 원잇의 흔적을 같이 남겨달라던 우석이?

우석이의 24번째 생일이 행복한 추억의 발자취로 남아 기억될 수 있도록, 오늘 하루 원잇의 흔적을 꾸-욱 남겨주세요❣️#김우석의_생일을_짤랑해#X1 #엑스원 pic.twitter.com/FfrEKyFibB — X1 (@x1official101) October 26, 2019

Kim Woo Seok’s agency TOP Media also shared its own post for the birthday boy, writing in Korean, “Happy Birthday to Kim Woo Seok!”

Check out some of the many loving tweets that fans posted for Kim Woo Seok’s birthday below!

To the boy who overcame his fears and became a man who shines brighter than anyone else. Happy Birthday to Kim Wooseok! Today, make it your day! We'll forever support you and cheer you on ?#짤랑하는_우석아_생일축하해#김우석의_생일을_짤랑해#HAPPY_WOOSEOK_DAY pic.twitter.com/jE8sU2ZLdt — HONEY:ATTACK ? 허니:어택 (@Honey10Attack) October 26, 2019

Happy Birthday to guy whose voice is as beautiful as he looks. We love you, Wooseok ❤️#짤랑하는_우석아_생일축하해#김우석의_생일을_짤랑해#HAPPY_WOOSEOK_DAY pic.twitter.com/WG0Web1uCE — X1(엑스원) GLOBAL (@x1global101) October 26, 2019

️To our autumn prince, Kim Wooseok. Even through the leaves falls, we hope you stay as bright as the summer lights. We wish you great happiness, the same one you always give us. Lets celebrate together for years to come ❤️✨#HAPPY_WOOSEOK_DAY#김우석의_생일을_짤랑해 pic.twitter.com/wnSqKCpODz — ?????? ????? ??? 김우석 (@Autumnlilac1027) October 26, 2019

Happy Birthday, Kim Woo Seok!