Demon Slayer: Battles Beyond Japan

Hidemasa, one of the first demons created by Muzan Kibutsuji, had always been different from his kin. He saw the world in a unique way and possessed a powerful Blood Demon Art. Muzan had a special fondness for him, but Hidemasa foresaw the potential downfall of their kind if they achieved Muzan's plan of immortality and becoming a perfect life form. He rebelled against Muzan's plan and refused to comply which only led to a duel between the two. In the heat of the fighting, Muzan would have forgiven Hidemasa, but he was too stubborn to back down. After his defeat, Hidemasa used his Blood Demon Art to defy his demon origins and become an even stronger being, free from Muzan's curse. He fled to Siberia, where he spent 500 years healing and perfecting his skills, waiting for the right moment to strike again.