Voyage: Robin's Childhood Sweetheart!

Reborn in the world of sailing, Cain was born in O'Hara and became Robin's childhood sweetheart. You get a self-discipline system at the beginning, and you will become stronger as long as you are self-disciplined. You did 100 push-ups and your arm strength was 1. You did 100 sit-ups and your waist strength was 1. You ran 10,000 meters and your fitness level is 1. You read for 1 hour and your intelligence is 1. … Kaido: "This guy's physical strength is stronger than mine!" Vegapunk: "Cain is the world's most talented scientist!" Whitebeard: "I have been the strongest man in the world for twenty years, and it's time to give up!" Warring States: "Be careful, even the entire navy headquarters may not be able to defeat him. This guy has been recognized by Whitebeard and is truly the strongest man in the world!" … One day, Im was pulled off the throne. Im: "Eight hundred years are nothing in front of this guy!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.