Akiko Narumi comes to Futo to take on the role of landlord for Shotaro Hidari, a detective known for his gritty cases. He is currently embroiled in a matter involving a past romantic interest and a Dopant who is actively pursuing him.

Following the death of his intended target at the hands of another Dopant, Shotaro collaborates with his partner Philip to unravel the circumstances surrounding the killing. Their investigation is complicated by the persistent presence of A…

Shotaro accepts a commission: to rescue a young woman held within the gilded cage of a legendary casino. Within its walls, the promise of unimaginable wealth beckons, yet failure carries a devastating price.

To locate the fabled casino, Shotaro must first overcome its Dopant master, while Philip struggles with a personal crisis that impairs his mental faculties.

To find the fabled casino, Shotaro must first overcome its Dopant master, all while Philip struggles with a disturbance affecting his mental faculties.

Shotaro wrestled with the implications of maintaining Asuka's conviction that Double was her father, as the Museum intensified its efforts to safeguard the Gaia Memory factory.

Philip pursued a street dancer—the key, he believed, to a memory stubbornly locked away. Meanwhile, Shotaro tracked a peculiar vigilante, a figure dispensing brutal justice upon those with coin to pay.

With several of Double’s Gaia Memories now in the possession of the Cockroach Dopant, Shotaro grapples with questions of self, while Philip strives to bring the dance partners back together, hoping to recreate their famed maneuver.

Akiko accepted a position as a maid for the Sonozaki family, her true purpose a discreet investigation into the unsettling trend of pastry chefs being abducted by Dopants.

Shotaro finds himself increasingly drawn into the Sonozaki family's ties to the Dopants, as Akiko pursues the perpetrator responsible for the patisserie abductions.

The death of a gang member, a casualty of a vehicle driven by a Dopant, spurred Shotaro to an unexpected decision: he would offer assistance to the very underworld organization involved.

The pursuit of the Virus Dopant takes an unforeseen path, compelling Shotaro and Philip to uncover the identity of the true orchestrator and the source of their bitter animosity.

Driven by a desire to earn Wakana's attention, Shotaro and Philip delve into the unsettling case of a Dopant stalker whose actions are disrupting the city's peace. They investigate the escalating chaos, seeking to prove themselves worthy in…

Shotaro's efforts to draw out Wakana's violent pursuer persist, while Philip finds himself increasingly drawn into the orbit of Sonozaki, the radio broadcaster.

A woman with a wary gaze sought out Shotaro, requesting his assistance in locating a Dopant who had begun terrorizing the city, adopting the moniker "Kamen Rider" as a claim of identity.

The revelation of a terrible truth from Saeko, coupled with the capture of his companions by the Arms Dopants, left Philip with a desperate choice: he had to find a way to rescue them. The only potential path forward lay in utilizing the vo…

Shotaro accepted the assignment with a grim resolve: locate the missing daughter of his barber. The search, however, unearthed unsettling revelations about the Gaia Memories, developments so disturbing they cast a dark shadow over everythin…

As Shotaro and Philip uncover the truth about the teenagers' use of the Bird Memory, Kirihiko learns the reality behind the Museum and his role within the Sonozaki family.

The newly appointed head of the Fuuto Police's Dopant investigation division turns to Shotaro in pursuit of a Dopant who preys on victims with ice-based powers.

Ryu's escalating intensity, amplified by the power of Kamen Rider Accel, poses a growing danger to the innocent. Shotaro and Philip must uncover the source of his rage while simultaneously confronting the ice-powered Dopant threatening the …

Makura draws Shotaro into an investigation: a search for a traitor within the Fuuto police force who is surreptitiously leaking information about the Gaia Memories.

Aya sought to earn the trust of Shotaro and Ryu, presenting her Dopant ability as a valuable asset while carefully concealing her true intentions and the complexities of her circumstances.

A query from Queen Elizabeth herself precipitates an inquiry into the improbable triumph of a street performer in a widely viewed singing contest.

As Shotaro sought a way to overcome the elusive Liar Dopant, he turned to Jimmy, questioning the latter's unwavering faith in his female admirer.

A small girl implored Akiko to locate her missing doll, a plaything that had lately been causing a stir of fright throughout Fuuto.

With Horinouchi now in the unsettling hands of Dr. Isaka, who intends to exploit him further, Akiko seeks to understand the doll's significance and the truth surrounding Horinouchi's daughter.

A whimsical magician, prone to absentmindedness and capable of vanishing from sight, enlists Shotaro's help in locating the vendor who sold her Gaia Memory. This seemingly simple task unexpectedly draws Terui closer to the individual respon…

Akiko and Philip fought with a desperate urgency to prevent Terui from enacting swift retribution against Shinkuro, recognizing the latter's crucial role in Lily’s survival from the perils of her Gaia Memory.

Shotaro agreed to help a young woman plagued by nightmares, the victims of a Dopant whose influence extended into the dream world, manipulating its prey from within.

With Philip in the custody of the Xtreme Memory, en route to meet Shroud, Shotaro persists in his efforts to uncover the identity of the person orchestrating Nightmare Dopant's assaults.

A companion of Soukichi's approaches Shotaro, requesting assistance in resolving a past grievance. The matter concerns something he had previously given to Fuuto and now wishes to reclaim.

As the weight of Philip's abandonment pressed down on him – a consequence of Shotaro's perceived failure to meet expectations – he wrestled with the unsettling possibility that Bitou was setting him up. He sought to unravel the truth behind…

Shotaro resolved to assist an unusual woman in her search for a missing feline, while Terui delved into cases of individuals acting against their will, compelled by forces they couldn't comprehend.

Shotaro strives to keep Yukie from entering the Museum, driven by a desire to protect her and to honor the memory of her late brother, Kirihiko.

When Shotaro is urged by his students to court the young instructor, Terui similarly sets his sights on her, captivated by a striking resemblance she bears to his late sister.

To rescue Nagi from Shinkuro's grasp – a man now aligned with Saeko in a plot to dismantle Ryuube – Terui must conquer the Trial Memory.

Shotaro accepted a commission to locate the family of an enigmatic stranger, while Philip found himself in a difficult conversation with Wakana, prompted by the absence of her sister from the Museum.

While Terui seeks to draw out Yamashiro's understanding of the Museum, Philip considers a permanent departure from Fuuto, taking Wakana with him.

Shotaro is enlisted to assist a cinema employee who has unexpectedly found himself at the center of a grand, unfolding drama – a spectacle that others are compelled to witness.

While Akiko feverishly works to finalize Tooru's film, the reclusive director becomes the focus of Wakana's attention. The intent is to unlock the complete extent of Wakana’s Dopant abilities through Akiko's efforts.

Jinno sought out Shotaro, a request etched with a desperate urgency. He needed assistance in locating a woman known for her icy demeanor and an excessive fondness for diamonds – the very woman who had orchestrated his arrest.

Shotaro struggles to prevent Rui from self-destruction, even as Philip plots a way to circumvent Wakana and secure access to the library's research.

A mother implores Shotaro and Terui to rescue her daughter, who has been afflicted with premature aging as a cruel act of vengeance. As the ominous presence of Shroud draws near, he seeks to transform the two men into Kamen Rider Double Cyc…

Terui struggles to understand the truth behind Shroud and her aims, as she attempts to compel him and Philip into a unified Double to combat Ryubee. Simultaneously, an operative of Foundation X secures possession of the newly acquired Gaia …

A query from an employee at the Fuuto Museum compels Shotaro to locate an artifact needed by Ryuube for the culmination of his elaborate scheme.

Fear constricts Shotaro, and Terui lies wounded. Philip finds himself vulnerable, caught in the grasp of his father Ryuube, who now prepares to employ both his son and Wakana in the unfolding of Gaia Impact.

Philip decided to ask Shotaro for assistance in locating Wakana, hoping for one final glimpse of her. She was being held by Kazu, a pawn in Foundation X's clandestine operations.

Shotaro and Philip face trials of immense severity, compelled to prevent Kazu from enacting his own Gaia Impact – a final endeavor that may also be their last shared undertaking.

A year had passed since Philip's leaving, and Shotaro journeyed on in solitude. Yet, a case involving the rescue of a boy's sister from the clutches of Dopants sparked a welcome shift in his path.