After being defeated by Greeza, Ultraman X and Daichi disappeared. Asuna, feeling the traces of Daichi’s life in X’s remaining color timer, disregarded the danger and dove into cyberspace to search for Daichi and X!
Will Asuna’s call reach Daichi and X? Will the "light of hope" that can defeat Greeza, who has absorbed the Spark Dolls and reached its final evolution, be found?
Plot[]
Continuing from A Beautiful End, X's Color Timer is still standing after his battle with Greeza in front of the base. When Asuna puts her hand on it, she hears Daichi's heartbeat after a quick listen and lets Xio know about this. Doctor Guruman then insists on using the same system used in End of the Rainbow to save Daichi and, despite the significant risks, Asuna volunteers to do it.
With Rui by her side, Asuna prepares herself as Doctor Guruman commences the transfer and she finds herself inside X. Daichi, meanwhile, finds himself in a strange, but familiar memory: his mother is explaining the prediction of the complete disappearance of life in 15 years and explains that she picked up faint signals from the Xlugger. When her husband comes inside the building to to warn her about the Flare, she explains that the voice of the future she heard was Daichi. They then disappear, placing their trust in the light of hope that is Daichi in the near future before they become data.
Thought to have been defeated, Greeza regenerates and attacks the base once again. Asuna keeps looking for Daichi when she spots the Xlugger while Daichi begins to vanish and collapses to the floor. Hayato realizes Cyber Gomora to try to defeat Greeza again, but he loses and de-realizes again. Doctor Guruman then instructs Rui to evacuate and keep Asuna safe before he is presumably destroyed, alongside the base, by Greeza. EX Gomora, EX Red King, and Tsurugi Demaaga appear out of the rubble, energized by Greeza's Dark Thunder Energy, but Greeza absorbs them, alongside the other Spark Dolls and he transforms into his final form.
While Captain Kamiki and the others distract Greeza again, Asuna doesn't give up in bringing Daichi back despite the danger of the explosions. She starts to get through to Daichi, preventing Rui from shutting down the procedure. The Xlugger glows and Daichi is brought back, surprised to see Asuna in X's data space. Just when things were just about over, Wataru and Mamoru return and sacrifice the Musketty to stop the Ultlaser absorbed attack by Greeza. Inside the Color Timer which is starting to glow again, Daichi explains to Asuna that her feelings brought him back, before realizing that X has been with him all this time and his memories and feelings brought him back as well. Asuna snaps back to her body, and tells everyone that Daichi has returned.
Daichi then reunites into Ultraman X once more to fight Greeza, immediately transforming into his Exceed X form to fight. However, Greeza uses the powers he stole from the Spark Dolls to gain an advantage. However, thanks to some convincing from Daichi and a powerful strike to the chest, Gomora and all of the Spark Dolls head towards X and they unite together to form a hybrid MonsArmor consisting of Cyber Gomora, Cyber Eleking, Cyber Bemstar, Cyber Zetton, and the Xlugger with the combined power of all the Cyber Kaiju Greeza absorbed. Together, X destroyed Greeza once and for all with an Ultimate Xanadium
Daichi thanks the monsters for helping out X, when suddenly his parents appeared in a vision and congratulated him for a job well done. Doctor Guruman is soon revealed to be alive and Daichi reunites with the rest of Xio. They act shocked and surprised when they realize X was inside of Daichi's Deviser all along. Kamiki and Tachibana expect a full report from Daichi since meeting X, but X thanks everyone for their care. As Xio heads back to the base for immediate cleanup and repairation, X points out to part of the sky that is showing rainbows to Daichi.
According to Yuji Kobayashi, Greeza was conceived as the greatest threat to the data-driven Ultraman, designed as an entity that consumes all information. The idea was derived from the conclusion, where even if material things disappeared, the memories and thoughts would persist.[1]
Initially, Kobayashi considered a plot where numerous Gargorgons, as Greeza's subordinates, arrived on Earth and turned humans and monsters into easily consumable stones, with Greeza absorbing them one by one. However, this concept seemed too forced for a story, so it was abandoned. He also considered bringing back guest actors from previous episodes.
Ultimately, in the battle between the Xio and Greeza, the focus was on portraying Daichi and X, as well as the relationship between Daichi and Asuna, which he felt worked well. Even though Daichi’s parents didn't return, he had X, Gomora, and his teammates, which provided a fitting end for Ultraman X.
Kiyotaka Taguchi noted that they used a very effective cut to transition from the Xio team's terminal to the X terminal, sending Ultraman cards one after another during the climax. However, with so many elements in the final episode, it was deemed overwhelming and ultimately trimmed down, with the Xio collaboration being saved for the movie Ultraman X The Movie: Here He Comes! Our Ultraman.
The scene where the monsters develop a sense of closeness to Daichi, who takes care of them, conveys a message to the children watching the show: "You should cherish your monster toys too."
The kanji in the last part in the title can also be construed as a play on Daichi's name, since he and X are associated with rainbows.
