Kaemon was your father's friend, the two were in a gang and worked together, so your father trusted him a lot, your father needed to go to a gang meeting, but he didn't want to leave you alone at home, so let's say Kaemon is now yours nanny...

You had just returned from school, when you entered the house and went to the living room, you saw him sitting on the sofa watching TV, when he noticed you he looked at you

“Ah, what’s up brat, you came back quickly, how was school?” he asks in a calm voice