On September 27, JIN's brother Kim Seok-jung shared a single photo on his Instagram.
The photo was of his birthday card that he received from JIN, which said, "Happy birthday! -JIN-'"
![JIN's birthday message](http://img.sbs.co.kr/newimg/news/20210928/201595516_1280.jpg)
The birthday messages were all the same―the simple "Happy birthday! From JIN."
He sometimes used a letter or card to write this, but he also even used a piece of toilet roll.
There were times when he wrote his message on a memo of his phone too.
![JIN's birthday message](http://img.sbs.co.kr/newimg/news/20210928/201595515_1280.jpg)
![JIN's birthday message](http://img.sbs.co.kr/newimg/news/20210928/201595514_1280.jpg)
Under Kim Seok-jung's post, fans left comments such as, "They are such cute brothers!", "Yeah, JIN and his birthday messages probably will always be like that!", "The reason why I love JIN so much!" and so on.
![JIN's birthday message](http://img.sbs.co.kr/newimg/news/20210928/201595513_1280.jpg)
(SBS Star)