My Darling Boy (слэш)

Eggsy is the best the Kingsman have (even if a few will never admit it). He gets the job done and always saves the day. He and Merlin have been dating for over a year. There were concerns at first about their ability to do the job but they are never less than professional at the office and all objects quickly went away. Out in the world Eggsy gives Merlin as good as he gets and they stand toe to toe.
At home though, when done with work, Eggsy is Merlin's darling boy. And Merlin is a very indulgent Daddy.