Super Junior's Heechul celebrated the birthday of fellow member Kangin, who is currently serving in the army. Through his personal Twitter, the singer wrote on January 17th, "I landed in Korea and it's my dongseng Kim Young Choon's (nickname) birthday ^-^� Suddenly remembering 'Kangin and Heechul'." Heechul also uploaded a picture of Kangin alongside the tweet. Fans commented in response, "Happy birthday~," while wishing Kangin good luck and hoping that he completes his service safely. Source: Star News via Nate