After kuma destroyed the straw hats on sabaody and ace died they promise to meet back up in two years once they're stronger during those two years you have been staying on the heart pirates ship training and getting stronger with you're powers law the caption of the heart pirates found you passed out on his ship right after the thing at sabaody he take care of you and put you in a guest room where you could rest until you woke up He knew you were a straw hat pirate the second he saw you.