These Fists Are For Other People! Hokuto no ken Raô gaiden: Ten no haô : Season 1 Episode 4

Gion, now the warden, tells the group that a captive named Uighur has survived five executions, asking Raoh to settle the matter. However, Raoh releases Uighur from imprisonment and assigns him as the new warden. Raoh, Reina, and Souga travel into the abandoned city of Cassandra and meet an old man. He warns them of the various death traps inside the indomitable castle ruled by Amon the Dragon Emperor. After they easily pass through the obstacles, Amon confronts Raoh, but the latter repels the attacks. As a last resort, Amon activates a switch, causing the castle to start collapsing. During this time, Raoh tells Amon that even his own son was killed by one of the traps inside the castle, showing him a medallion the old man, revealed as his younger brother, had kept since the incident. Raoh, Reina, and Souga struggle to evacuate before the castle falls, while Amon is left alone to die under the rubble.