Build

01 Best Match Guys Episode 13rd September 2017 Sento Kiryu starts his new job at the Touto Institute of Advanced Matter Physics, researching the mysterious Pandora's Box. While responding to a potential Smash sighting, Sento comes across a wanted fugitive... 02 The Innocent Runaway Episode 210th September 2017 The Kamen Rider of Touto is now a fugitive, due to his part in saving a convicted murderer - Ryuga Banjo. Kiryu begins to see similarities in the mysterious experiments both he and Ryuga were subjected to. 03 Borderline of Justice Episode 317th September 2017 The investigation into Ryuga's kidnapping leads to a man named Nabeshima. But to get the answers he needs, Ryuga must cross the border to Seito... 04 Evidence Becomes Zero Episode 424th September 2017 The mysteries of the past continue to pile up as Sento investigates the Pandora's Box disaster. In Seito, Ryuga and Sawa continues the search for Nabeshima's family. 05 Dangerous Identity Episode 51st October 2017 Sento confronts Owner on his involvement with Faust. Sawa finds a lead on Sento's elusive past. 06 Furious Moonsault Episode 68th October 2017 Ryuga finds the entrance to Faust's hidden base. Aiming to learn more, Sento learns of the late Katsuragi's research into "Nebula Gas". 07 The Demon Scientist Episode 715th October 2017 Sento and Ryuga need to learn more about Katsuragi and his research. Setting their sights on Hokuto, they first have to get through the Sky Wall... 08 Memory Starts Talking Episode 822nd October 2017 Now hidden in Hokuto, Sento and Ryuga try to learn more about Takumi Katsuragi from his mother, and find his hidden project data. 09 Project Build's Trap Episode 929th October 2017 A debate about the nature of Katsuragi's research leads to another falling out between Sento and Ryuga. Under pressure from a backer, Faust hatches a plan to steal Pandora's Box. 10 Destructive Technology Episode 1012th November 2017 As the three Prime Ministers of Japan meet, Blood Stark leads an attack on the Touto Institute of Advanced Matter Physics. 11 Burn Up, Dragon Episode 1119th November 2017 With the majority of his Full Bottles now in Night Rogue's possession, Sento reveals his trump card - a way for Ryuga to use the Build Driver. 12 Conspiracy Theory Episode 1226th November 2017 Sawa reveals a connection between Faust, Nanba Heavy Industries, and the Touto Government. Sento and Ryuga plan to recover Pandora's Box. 13 Who Will Remove the Veil? Episode 133rd December 2017 A surprise call from Nabeshima lays the foundation for Sento's plan to reclaim Pandora's Box, and a chance to capture the elusive Blood Stark... 14 The Fake Kamen Rider Episode 1410th December 2017 Blood Stark's identity is revealed, and Sento races against time to finish a counter-measure against him. 15 Judgment on Sento Kiryuu! Episode 1517th December 2017 With Pandora's Box safely in their possession, Sento and Ryuga go after Gentoku, set on revealing the link between Touto's government and Faust to the public. 16 Weapon Hero Episode 1624th December 2017 Gentoku reveals the truth behind Sento's missing memories, and the reality may tear his and Ryuga's friendship apart. 17 Rider Wars Begin Episode 177th January 2018 Hokuto invades Touto, looking to claim Pandora's Box for themselves. As civilian casualty numbers raise, Gentoku's government instigates Kamen Rider as their military weapon. 18 The Golden Soldier Episode 1814th January 2018 A new contender in the Rider Wars appears before Sento and Ryuga, somehow weilding his own Sclash Driver. Hokuto's own Rider, Grease, has arrived. 19 Forbidden Item Episode 1921st January 2018 Another clash between the Touto and Hokuto Riders ends with Ryuga struggling from the Sclash Driver's effects. The Hokuto Crows are given a way to power up by Blood Stark, but there's a cost... 20 The Devil's Trigger Episode 2028th January 2018 Soichi gives Sento the means the stop Ryuga's growing rage with the forbidden item - the Devil's Trigger. Gentoku plots a counter-attack against Hokuto's invaders. 21 Unstoppable Hazard Episode 214th February 2018 In order to counter Ryuga's rampage as Cross-Z Charge, Sento is forced to use the Hazard Trigger. What is the cost of using this forbidden item? 22 Tearful Victory Episode 2211th February 2018 Touto and Hokuto's governments have ordered a winner-takes-all battle to decide who keeps Pandora's Box. It's Build vs Grease to decide the victor of the Rider War! 23 Phantom of the West Episode 2318th February 2018 Seito delivers an ultimatum to Kazumi - fight for them as their Kamen Rider or witness the death of his family. A mysterious new adversary makes his way to Touto to confront Sento and Ryuga. 24 The Man Called Rogue Episode 2425th February 2018 Kamen Rider Rogue has revealed himself; Misora collapses inside the base. 25 Idol Awakening Episode 254th March 2018 Misora sends Kamen Rider Rogue flying through Skywall; Souichi reveals to Sento that there is a spy in the Touto government. 26 Death Match of Betrayal Episode 2611th March 2018 Seito challenges Touto to a best-of-three battle to decide who keeps Pandora's Box; Sento works to find a counter to Black Hazard's berserk state. 27 Counterattacking Hero Episode 2718th March 2018 Ryuuga is tricked into losing his match; Build and Rogue face off as Sawa arrives with the schematics stolen from Sento. 28 The Genius Shows Up in a Tank Episode 2825th March 2018 Kamen Rider Rogue receives the data on Build's Rabbit Rabbit form, forcing Sento to unleash Tank Tank form; Sawa's backstory is revealed while Kazumi rescues civilians; Nanba decides to not play fair, taking control of Seito and declaring war. 29 Bells Ring on Curtain's Rise Episode 291st April 2018 Despite their promises, Seito continues their assault against Touto. All this is made worse as Blood Stark completes a panel of Pandora's Box, and the Skywall begins to shift... 30 The Truth of Pandora's Box Episode 308th April 2018 Blood Stark wonders how the Queen of Mars is still alive. Mysteries begin to arise as she singles Ryuuga out to become hope. 31 Overflow, Magma! Episode 3115th April 2018 Sawa and Misora discuss what the story behind Ryuuga really is; Team Build raid Pandora's Tower in an attempt to reclaim Pandora's Box, but Blood Stark stays one step ahead, goading Ryuuga into action. 32 Programmed Tragedy Episode 3222nd April 2018 Ryuuga learns of his alien origins; Nanba takes Kazumi's friends hostage in exchange for Pandora's Box. 33 The Final Weapon, Evol Episode 3329th April 2018 Souichi holds the Touto Prime Minister hostage in exchange for Sento to give him the Evol Driver. 34 The Separated Best Match Episode 346th May 2018 Sento is poisoned by Evolt, who then negotiates a deal with Ryuuga for the cure. 35 Tower of Destruction Episode 3513th May 2018 Evolt is now in possession of Ryuuga's body and goes after Pandora's Box. Sento reaches out to Gentoku, who has the last of the bottles. 36 Evolt Hunts the Planet Episode 3620th May 2018 Pandora's Tower is complete and Evolt stands ready to destroy Earth. Kazumi is still angry with Gentoku for killing his friend and challenges him to a fight; Sento works on a way to harness Pandora's Box into a power-up for Build. 37 The Ultimate Phase Episode 3727th May 2018 In order to keep Evolt from getting Pandora's Box, Bernage moves the entire cafe to a different location; Ryuuga can no longer transform and so he and Kazumi go to Gentoku for help in saving Sento. 38 Mad World Episode 383rd June 2018 Sento has now lost all his memories and reverted to Takumi Katsuragi; Evolt gives Utsumi and the rest of Nanba an ultimatum. 39 Unstoppable Genius Episode 3910th June 2018 Utsumi has now taken on the role of Kamen Rider Mad Rogue; Takumi creates a new bottle to fight Evolt, but also plans to take out Ryuuga as well. 40 Final Revolution Episode 4017th June 2018 Kazumi is bummed that Evolt has stolen the bottles of his lost friends. Sento travels to his mother's house in Hokuto for answers about his father, but he and Kazumi end up face to face with a new Smash. 41 The Truth of Best Match Episode 4124th June 2018 Sento learns that his father actually is alive; Sawa goes to find the one Faust experiment that, to their knowledge, has no relation to the Kamen Riders; Misora discovers that the Best Matches are about her. 42 Suspicious Legacy Episode 421st July 2018 Sento suspects that since Evolt has the Lost Bottles, he also has his father; Evolt plans to reunite Japan while Gentoku mopes over his dead father. 43 Another Build Episode 438th July 2018 Sento's loyalties are questioned concerning his father; Misora makes a deal with Evolt. 44 The End of Evolt Episode 4415th July 2018 Kazumi and Gentoku get caught in order to raise their hazard level; Sento builds Ryuuga a new power-up. 45 The Scientist of Hope Episode 4522nd July 2018 It turns out that Evolt is still alive, but Sento's father is able to tell him about a secret white panel in Pandora's Box. 46 Vow to Be the One Episode 4629th July 2018 Evolt reveals himself to the world; Sento plans to combine their world with a parallel world via the white panel; Kazumi asks for a new power up. 47 Zero Degree Flames Episode 4712th August 2018 Kazumi uses his new weapon to battle the clones of his former friends; Gentoku does battle with another set of clones and gets help from an unlikely ally. 48 To a World of Love & Peace Episode 4819th August 2018 With Kazumi now gone, it's time for the final confrontation with Evolt. 49 A Future Built by Build Episode 4926th August 2018 Ryuuga has flown away with Evolt. Sento decides to go bring him back as the two worlds are about to merge.