Start by Repairing Sunstone Machinery

In the fictional Wano country where the spiritual energy of the Japanese fantasy sunstone is deeply bound to steam magic weapons, Ida Keisuke, the son of a low-level miner who is burdened with the last wishes of his best friend and the sacrifice of his relatives, is under the shadow of the cold poison curse of the mine and surrounded by layers of the elite class. He breaks through the shackles of the orthodox rules with his heaven-defying talent for magic weapons, and finally breaks the fate of the bottom people of Ishihara Town who are firmly locked in the mine.