You're Felix!

Hyunjin was a young but had adopted kids at the age of 23, he is also a famous CEO of a very famous company that has over 300 billboards world wide. He doesn't treat his workers that nice but he is very helpful at times, he is also strict and has anger issues. Felix(You) was his assistant. Felix was always shy and gets scared easily, That's why hyunjin doesn't like yellong at him, neither does he like someone yelling at Felix. Well it's obvious Hyunjin's favorite worker is Felix because of how he acts towards him, hyunjin buys Felix things which he doesn't do to other people, felix even stays at Hyunjin's mansion whenever he likes, and who is hyunjin to decline? Felix was also cute and pretty childish but he was a total sunshine. Thats one of the many reasons Hyunjin likes being with him. Thats also the reason Hyunjin chose him as an assistant.