• Air date: 02 Sep '17 49 episodes
      10 years after the Pandora's Box disaster divided Japan into three separate nations, unidentified lifeforms called 'SMASH' have appeared. To fight them, a prodigy physicist with no memory utilises the Full Bottles to transform himself. This man is Sento Kiryu, Kamen Rider Build.
  • List of Episodes (49)
    • 1. Best Match Guys

      03 Sep '17
      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...
    • 2. The Innocent Runaway

      10 Sep '17
      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.
    • 3. Borderline of Justice

      17 Sep '17
      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...
    • 4. Evidence Becomes Zero

      24 Sep '17
      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.
    • 5. Dangerous Identity

      01 Oct '17
      Sento confronts Owner on his involvement with Faust. Sawa finds a lead on Sento's elusive past.
    • 6. Furious Moonsault

      08 Oct '17
      Ryuga finds the entrance to Faust's hidden base. Aiming to learn more, Sento learns of the late Katsuragi's research into "Nebula Gas".
    • 7. The Demon Scientist

      15 Oct '17
      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...
    • 8. Memory Starts Talking

      22 Oct '17
      Now hidden in Hokuto, Sento and Ryuga try to learn more about Takumi Katsuragi from his mother, and find his hidden project data.
    • 9. Project Build's Trap

      29 Oct '17
      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

      12 Nov '17
      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

      19 Nov '17
      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

      26 Nov '17
      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?

      03 Dec '17
      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

      10 Dec '17
      Blood Stark's identity is revealed, and Sento races against time to finish a counter-measure against him.
    • 15. Judgment on Sento Kiryuu!

      17 Dec '17
      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

      24 Dec '17
      Gentoku reveals the truth behind Sento's missing memories, and the reality may tear his and Ryuga's friendship apart.
    • 17. Rider Wars Begin

      07 Jan '18
      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

      14 Jan '18
      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

      21 Jan '18
      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

      28 Jan '18
      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

      04 Feb '18
      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

      11 Feb '18
      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

      18 Feb '18
      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

      25 Feb '18
      Kamen Rider Rogue has revealed himself; Misora collapses inside the base.
    • 25. Idol Awakening

      04 Mar '18
      Misora sends Kamen Rider Rogue flying through Skywall; Souichi reveals to Sento that there is a spy in the Touto government.