In a spectacular season finale, Shangri-La Frontier intertwines virtual and real events into a dramatic climax. While the underwater city R’lyath counts down with the unstoppable ticking of "3 Days Until X-Day," Kei Uomi faces an impossible dilemma: A sponsor forces him to compete simultaneously in the decisive exhibition match against Sylvias Star Rain in Galaxia Heroes: Chaos and the world finals of the shooter Ruins War Hounds 6. This double burden threatens to shatter Kei's dream of facing Sylvia in battle.

His team Nitro Squad – consisting of Megumi Natsume, Towa Amane, and Sunraku (alias Rakuro) – responds with a daring delay tactic. They plan to stretch the match times by strategically exploiting round regulations, allowing Kei a late return. Towa enhances the plan with a spectacular performance: She outfits Sunraku as the masked "No Face" and herself as "No Name," a nameless knight, in elaborate costumes to leverage the entertainment aspect of the event and confuse Star Rain.

Meanwhile, in Shangri-La Frontier, the battle against Ctarnidd draws closer. Sunraku balances preparations for X-Day with his role in the exhibition match, while the group conducts final explorations in R’lyath. The inverted city reveals further secrets – destroyed buildings regenerate through Ctarnidd's power, yet the towers of the Sealing Generals remain untouched, confirming Sunraku's strategy to use them as reflection points.

The exhibition match begins without Kei, who is fighting in the Ruins War Hounds 6 finals. Nitro Squad faces Star Rain in surreal costumes, while Sylvia Goldberg waits, disappointed yet confident, for Kei's return. The first round becomes a psychological duel: Towa and Sunraku exploit NPCs and environmental mechanics to stall for time, while Megumi surprisingly displays tactical strength. But the pressure mounts – a single mistake could ruin the entire plan.

In R’lyath, the situation escalates: Araba reveals that Ctarnidd's power distorts not only the city but also the perception of its inhabitants. This explains why Sunraku's experiments with reflected attacks have had limited success so far. A nighttime advance to the city's central castle ends in a breathtaking scene: The group discovers Ctarnidd's Eye – a colossal, shimmering structure believed to be the key to his defeat. But before they can act, they are attacked by a horde of inverted sea creatures, brutally underscoring the countdown.

The finale culminates in a double cliffhanger:

- In the exhibition match, Kei manages to win the Ruins War Hounds 6 finals early. He rushes back to the tournament, only to face a critical twist – Sylvia has abandoned her position as "Anchor" and enters earlier, destroying Nitro Squad's time plan.

- In R’lyath, Ctarnidd suddenly activates a global inversion wave, plunging the entire city into a maelstrom of lightning and chaotic gravitational distortions. Sunraku and Araba are separated, while Emul and the NPCs are put in danger.

The episode ends with a symbolic image: Sunraku stands before Ctarnidd's Eye, his Ducusram swords drawn, while simultaneously, Kei and Sylvia face off in Galaxia Heroes: Chaos – their eye contact through the VR headsets mirrors the years of rivalry and respect between them. The screen cuts to black, accompanied by the final countdown: "X-Day – 0."