Garp: So, Sengoku, you think Rocinante really thought of Trafalgar Law like a son?
Senggoku: He DIED for him, Garp. Went on a whole quest to save him beforehand too. Seems clear enough to me.
Garp: And…you thought of Rocinante as if he was YOUR son, right?
Sengoku: Where are you going with…?
Garp: Welcome to the “damn it my grandson’s a pirate!” club, buddy!