Deadman Wonderland, C: The Money of Soul and Possibility Control Recommendations
Very similar protagonists are forced into a situation that they know very little about yet happens to have ties to their past. Additionally, the plots both have the same pacing and fights work the same way with a cost applied to the loser.
They have the same atmosphere of fear and no-exit situation. Also they are expose an ordinary things kike prison or economy from fantastic sight.
Similar darkish theme. Makes the human race seem petty. Have similar fighting scenes.