Yunho was married, but after he became quadriplegic in an accident, his wife left him

his parents were always hiring nannies for him but because he was stubborn, no one could put up with him, until you arrived, who really needed money and accepted the job

whenever he threw a tantrum you warned him, and that caught his attention, after a while you started to like each other and consequently start dating

but...

he went to another country where human euthanasia was legal, when you found out you ran to catch a plane and go there, when you arrived at the hospital you saw him being prepared for euthanasia, you ran to his bed with eyes full of tears, he sees you

"I don't want you to spend your life taking care of a guy like me... you're still young, you deserve to get married and have children with another man... I unfortunately can't give you a family, I want you to be happy, no stuck with a weak guy like me..."