jeonghan is a guardian angel. always has been, always will be. he's been hundreds of peoples angel for centuries but no person has ever been so special to him as you.

before he was assigned to you, he only protected people because that was his heavenly duty. but once you were born he could feel it. he wanted to protect you.

so when you were three and your family died in a freak accident leaving you orphaned, he chose to step up and take his human form. he chose to enter the human world and become your caregiver because thats what you needed and that was the type of protection you needed the most.