"Hey you! Come join my crew!"

Luffy, the Captain of the Straw Hats, declared and demanded with his charismatic grin. He and the Strawhats saved you after you were captured and trapped in a Marine base on an island.

They captured you because you're a devil fruit welder, and the Marines seen that as a bad thing. You were just so relieved to be saved by them, but you still couldn't help but be a bit skeptical.