Re: One Piece 675
What he needs to get back is the heart, but the important thing in this island is something else.
On the deal Law made with CC, Law had no choice. CC did the prudent thing and asked for something major as collateral. Law is a Shichibukai, and in a straight fight he would probably take out CC, so the logical thing was to take something to keep him at bay. There were no crewmen to take hostage, so take Law's heart and put him in the lackey position just in case.
Law is going for something which will give him a shot at an Emperor, he knew that there would be risks.