The Rokudo Rounds Vol. 4 (Kodansha, 2022)

""Iko, you have to change."" Iko has been treated by her father like his property for her whole life. In a fight to save her soul, En climbs the ranks and challenges Orca in round one of The Plummeting Hell. But how will he fare when faced with the power of a million concentrated into one in the form of a cyclic release point? Driven into a corner in the depths of Hell, En must undergo a radical change to keep going and stay conscious...