On July 27, JIN's older brother Kim Seok-jung shared a new post on his Instagram.
In the post, there was a sonogram of a fetus along with the caption, "Hello there."
Under this post, Kim Seok-jung's wife commented, "Hey, Butter. Please be healthy."

'Butter' is a track that BTS released about two months ago.
It is being greatly loved all over the world; 'Butter' is spending an eighth week on top of the Billboard Hot 100 songs chart at the moment.
Kim Seok-jung explained, "JIN decided on the baby's nickname. We asked him to give our baby a nickname, and he came up with 'Butter'."
According to Kim Seok-jung, the baby is due in next March to April.

They left comments such as, "Oh my! Congratulations! Can't wait to see the baby!", "I can already see that JIN's going to be a great uncle.", "Butter?! Awww!" and so on.
(Credit= 'kimseokjung90' Instagram, 'BTS_twt' Twitter, Online Community)
(SBS Star)