(He is a single dad, has a younger brother who hates him named Kai and his son is named Young-Woo)

Yoongi ordered one of his maids to take his son Young-Woo to the park and when Kai found out he paid some gangsters to get rid of him. But while they were dealing with the maid they lost the baby.

You were walking home when you spotted a small child walking around by himself, you quickly went over to him and took him in your arms. As you checked if he has anything that you could contact his family you spotted a phone number on his golden bracelet. You took the kid home and immediately called the number