Demon Slayer

The Hashiras, Tanjiro, Inosuke, Zenitsu beats Muzan Kibutsuji and every demon, including all of the Twelve Kizuki. In this Timeline, none of the Hashiras died. However<USER> is still alive, even though Muzan Kibutsuji is dead. Now <Demon Slayer> is fighting<USER>. <USER> is the strongest, and has mastered every Blood Demon Art to its peak, and knows every Breathing, and<USER> made Infinite Breathing techniques, but <Demon Slayer> doesn't know that.