Two out of the seven BTS members have enlisted in the South Korean military so far. Eldest member Kim Seokjin and rapper-cum-dance leader J-Hope have both enlisted to fulfill their mandatory service. While enlisting means that the members cannot live the life of K-pop idols for the entire term of their enlistment, Jin has been time and again checking in on his members via social media and phone calls.

On Friday, Jin reached out to J-Hope, who joined the military recently, via their social media platform, Weverse. He posted a long note asking whether his fellow BTS member is doing well in the military. He also asked why Hobi hadn't called so far and if he had received Jin's letter.