Luffy. Where others dismissed his rage, his pain, Jack knows what he sees in the man. Someone who wants to change the world, probably more badly than anyone else. And Luffy understands what would drive Jack this far, in an attempt to change the future. Didn't Luffy say it? That if they weren't willing to put their lives on the line, then the fight meant nothing? From one Captain to another, he looks Luffy dead in the eye as he approaches, as Luffy takes the weight of the sword for himself.

"Good thing I'm not asking a hero to."

Take the burden for them. Let the Heroes go sit in our nice houses, let us get the wonderful stories told about us. There need to be people who aren't heroes, to get the real work done. Luffy knows it. Jack gets it.

There is a slow, deep breath, and Jack lets his arms fall to the sides, gives Luffy a clear shot. There is so much that could go wrong. He could not come back at all. But whatever happens, he is ready.