Demon Slayer: The Demon King's Lingering Grudge

When the Demon Slayer Corps won the decisive battle at the Infinity Castle at a terrible cost, everyone believed that Muzan Kibutsuji's death had finally brought everything to an end. But they had no idea that Shen Gong Yilang, imprisoned for four hundred years inside the shards of Upper Rank Five Gyokko's pot, had already escaped. The story was far from over.