In the age of navigation, I was invited by Luffy to board the pirate ship

As a loser working at a construction site, I was actually hit by reinforced concrete and transmigrated. I didn’t deserve to die and transmigrated to my favorite pirate world! It was even bound to a god-level cultivation system? I accidentally saved a boat of people and was invited by Luffy to board the boat together, starting the journey of One Piece.