A boy from the East China Sea inherited the blacksmith shop left by his parents, and unexpectedly awakened the magical Duan Fruit ability - every 100 hours of exercise can be converted into 1 Duan of strength, which can not only strengthen the body, but also incorporate blacksmithing skills. In order to avenge his parents, he used his wisdom and the power of his nascent stage to defeat the pirates. From then on, he embarked on a voyage based on forging the body and using forged weapons as the front.
