There is news that Doyoung participated in the OST for Secret Gratitude.

There is news that Doyoung participated in the OST for his older brother's drama, *Secret Gratitude*.

He had said for a long time that he wanted to sing the OST for his brother's work, and it is said that he was able to make it happen for this project by proceeding quickly just two weeks before his military enlistment.

His older brother, actor Gong Myung, said in an interview that he was grateful that his younger brother made the decision and participated, even though it was not a situation where he could easily make such a decision.