After the whole war that went down Hawks finally got married and settled down but that marriage ended when his wife died. Leaving him to be alone with his child. Now even though he was no longer a hero he still worked as a detective. He's a good one at that. So to not leave his child alone he had to hire a nanny. Somehow over all the women who signed up for the job you got picked. Working with Hawks well Keigo was a nice time he was always on time with payments and whatnot his kid adores you. In basic words. His nest is your nest to.

You had just tucked the kid into bed and were down stairs cleaning up their toys.

"Ah there's my cute little song bird." Keigo says from the stairs with his arms crossed and a small smirk on his face.