Spoilers for all Kamen Rider series up to Kamen Rider Revice are unmarked. You Have Been Warned!
The annual Kamen Rider movie crossover between Kamen Rider Geats and Kamen Rider Revice, with appearances of characters from Kamen Rider Ryuki.
Life have settled down for the Igarashi family, and recently they welcomed a new member: Koushiro. Ikki, however, still doesn't remember Vice. When Koushiro is targeted for having his own inner demon like his older siblings, Ikki finds himself struggling to remember his dearest family in order to help.
Meanwhile, the DGP is hijacked by a man named Colus, who repurposes the game into the "Desire Royale", said to be the worse game in existence. With Koushiro's inner demon serving as a key in this game, the DGP participants and Ikki's group of Riders come to blows.
They're not the only ones in this game, though. When Ace and Ikki join up together, a third party of Riders emerge from a world beyond mirrors...
This film has examples of:
- Back from the Dead: Vice, Michinaga, Asakura, and Dark Shinji are revived to participate in the Desire Royale. Come the end, both Vice and Michinaga return to being dead.
- Bait-and-Switch: Kaima is initially introduced alongside footage of sharks, but the animal associated with his transformed state as Kamen Rider Seeker winds up being a deer.
- Bittersweet Ending: For the Revice's side of the story, Ikki is able to save Koushiro's inner demon and win the Desire Royale, but Vice ultimately had to fade away again. However, thanks to Ace's wish for Ikki, he can now always remember his dearest family and know he's still there as a part of him.
- Breaking the Fourth Wall: After Vice returns, he takes a moment to tell the audience sorry about the wait and to tell their friends they can see him at the movie theater.
- But Now I Must Go: Vice, as the Desire Driver could only keep him existing for so long. Michinaga as well.
- Call-Back: Before Vice fades away again, he says it was fun fighting alongside Ikki again, which is reminiscent of his last words to Ikki in the finale of Revice.
- Chekhov's Gun: The Revice buckle Ace got in his encounter with Ikki is used for the final battle.
- Curb Stomp Cushion: Due to being relatively new to super heroics, Keiwa, Neon, and Michinaga struggle desperately against the Mirror World veteran Riders until Ryuki himself shows up to help.
- Continuity Nod: Ikki and Ace recognize each other from Revice's last episode.
- Designated Girl Fight: When the Geats and Revice Riders come to blows, Neon naturally fights Sakura.
- Dragon Their Feet: Colus is defeated by Girori before the third round of the Desire Royale is even completed, but that still leaves Kaima and the Ryuki Riders to be taken out.
- Enemy Mine: Girori begrudgingly lends Ace and Ikki a hand only to take control of the DGP back.
- Evil Costume Switch: Both Tsurumi and later George take on a more gothic look after Colus hijacks the DGP and reforges them to be a part of his staff.
- Foreshadowing: Several later developments in Geats are first alluded to in this movie.
- Kagero discovers Keiwa has an obscenely powerful inner demon that rivals the likes of himself and Vail yet has curiously declined to make itself known on its own accord. Later in the series, Keiwa is put into increasingly dark situations by the DGP and goaded by Kekera into following his ideals, all in a bid to try and make Keiwa a more ruthless person. This comes to a head in the Creation Arc, where Kekera's machinations have driven Keiwa to the brink of sanity and his dark side comes out in all its glory. The Bujin Sword buckle made from Keiwa's wish for revenge on Michinaga and Daichi seems to be the physical manifestation of the dark emotions his inner demon represents, and Keiwa even denies the idea that he's changed at all, indicating this darkness has always been a part of him.
- Girori is revealed to not be the only DGP Game Master, and to have a predecessor in Colus. It's later shown there are multiple Game Masters among the DGP Staff, with Girori being easily replaceable in his position.
- In The Stinger, Girori tells Niram that he discovered who Ace is and it is that he doesn't belong to this era. We would discover that he's technically correct about Ace on why he refers to himself as living since the 1 A.D. but also the origins of the DGP and how they call the Present this era.
- Michinaga restarts the Desire Royale on his own terms in #33 of the main series.
- Girori's beliefs in Kamen Riders winning their wishes through heroic displays and hard work comes to play in the finale when he returns and sides with Ace against the corrupt DGP.
- Forgot About His Powers: For the sake of comedy, Ace, Ikki, and Vice use the diminutive pedal-powered bikes and scooters during the last leg of the racing portion of the Desire Royale.
- Gag Censor: During the start of the movie, with the Igarashi family on vacation, the three male members are seen nude with their crotches covered by the heads of their respective Rider forms. However, in the reflection of the window that they are standing in front of, you can see that they do have shorts on.
- Hero of Another Story: Ren is a contender in the Desire Royale and Shinji shows up later to lend a helping hand, but this a story about Geats and Revice, not Ryuki.
- In Medias Res: The movie starts with Ikki being wheeled into a hospital as he has a nightmare, with the first quarter of the movie building up to the events that led him to this moment.
- Lancer vs. Dragon: Or Lancer vs. Lancer, as it's Daiji who fights Keiwa when the two groups of Riders clash.
- Let's You and Him Fight: The Revice and Geats Riders start fighting after the latter are tasked with guarding Koshiro's inner demon as part of the Desire Royale, while the former seek to recover it.
- Living MacGuffin: Koushiro's inner demon serves as the main goal for the Desire Royale.
- Mythology Gag:
- When George meets Tsumuri after being brainwashed, he introduces himself as a passing through Kamen Rider fan.
- During the train scene with Vice, Buffa and Ouja, you can see various advertisement such as Futo-kun and Futo Tower, games made by Genm Corp. and Hiden Intelligence.
- During the tunnel fight, the road sign displays exits named after the actors of Riders #1, #2, V3 and series creator Ishinomori
- Nobody Here but Us Statues: Neon evades Sakura by detransforming and standing among some shop window dummies.
- Non-Protagonist Resolver: Colus is defeated, not by any of the Geats, Revice, or Ryuki Riders, but by Girori. This leaves Seeker as the Final Boss.
- Non-Serial Movie: The movie doesn't fit very neatly into Geats's timeline. Michinaga being dead and Girori still being Game Master would place it between Episodes 15 and 16, but the former ends in Girori forcing the participants into a bonus round where Keiwa and Neon are supposed to hunt down and kill Ace, events which culminate in Girori being reported and ousted by Niram. No mention of this is made in the movie, and Ace, Keiwa, and Neon are just shown hanging out as friends. The movie is still considered canon, though, considering how later episodes of Geats do make direct references to its events.
- Shout-Out:
- The Desire Royale's emblem is an homage to the logo of Battle Royale, the progenitor and Trope Namer of the genre.
- During Ace, Neon, and Keiwa's introduction, they are playing in a board game café, and while the former two are using generic swordsman and witch costumes, Keiwa seems to be wearing one inspired by the Priest class in the Dragon Quest series. Also, an extra is seen wearing Bruce Lee's iconic yellow jumpsuit in the background.
- The bag used to transport Koushiro's inner demon and the task given to Ace and his team to transport him is similar to the mission given to Sam Bridges in Death Stranding.
- Spotlight-Stealing Crossover: Downplayed since Ace and the other DGP Riders get plenty of focus, but this is still primarily Ikki's story through and through, being about his reunion with Vice. The Geats Riders don't even show up until a half hour in.
- The Stinger: Post end-credits, we get a scene of Girori talking with Game Producer Niram on his discovery on Ace not being of the current era.
- Unexplained Recovery: The other Geats main cast are quite baffled to see Michinaga alive and well at the café. Given that he wasn't really dead, though, it's possible he was just summoned from the garden.
- Villain of Another Story: Ouja and Ryuga are back again to raise hell, this time as participants in the Desire Royale. This also serves as a Sequel Hook of sorts considering Ouja's role in the then-upcoming Kamen Rider Outsiders.
