Sunraku and the merfolk Araba face off against Atlanticus Lepnorca, a powerful deep-sea king with blue flames and lightning attacks, in the inverted city of R’lyath. Sunraku discovers that the Tower of the Sealing General reflects attacks—a mechanism of Ctarnidd’s power. With a risky plan, he deliberately lures the king into position to redirect its own laser attack toward the tower and rebound it.

Araba takes on the role of the distractor, drawing the king’s aggro and enabling Sunraku to scale the tower. Using the Waning Mirror ability, Sunraku manipulates the boss’s AI to redirect aggro to Araba while triggering the reflected laser. The rebounded attack strikes the king, significantly weakening him and opening a window for offense.

In the final melee, Sunraku strategically switches between the Ducusram swords and the blunt weapon Gilta Brill to pierce the king’s thick hide. In an emotional outburst, he channels frustration from past quests (such as conflicts with Failia) into his assaults. Despite a last-ditch counterattack from the king, they ultimately defeat him.

Consequences of the victory:

- The defeated Atlanticus drops valuable loot, including the Arctus Regacles Flamehair Fin.
- The countdown "5 Days Until X-Day" underscores the urgency to overthrow Ctarnidd’s rule.
- The unlikely alliance between Sunraku and Araba solidifies, despite Araba’s initial doubts.

The episode blends tactical boss mechanics (reflection, aggro management) with Sunraku’s signature unorthodox combat style. It highlights the importance of teamwork and shifts focus toward the impending finale in the "Abyssal Scenario," while further unraveling the rules of R’lyath.