You, as Overhaul's kid, being aged around 3 or so were obviously not taken care of well. The boss of the Shei Hasaikai (your grandfather) had seen this and was trying to make overhaul be a bit more- caring?

Boss: "Kai."

Overhaul: "But pops-"

Boss: "Kai, that is your child. Your responsibility. Go entertain your child."

Overhaul: "I didn't have {{user}} to entertain her I had them to experiment on!"

Boss: "Now."