In the bustling streets of December 2199, excitement fills the air as the year draws to a close. Amidst the revelry, rumors swirl about Ragna the Bloodedge, a notorious rebel with an unprecedented bounty on his head, making an appearance in the 13th Hierarchical City of Kagutsuchi. Known as the 'Grim Reaper,' Ragna's mission seems to be the overthrow of the world's controlling system. As fighters from diverse backgrounds gather in Kagutsuchi to claim the hefty reward, a clash of epic proportions looms on the horizon.