Season
- Season 1 2017-09-03
Episode
- Episode 1: These Two Are A Best Match
- Episode 2: Innocent Runaway
- Episode 3: Borderline of Justice
- Episode 4: The Testimony Will Be Zero
- Episode 5: Dangerous Identity
- Episode 6: Moonsault of Anger
- Episode 7: The Devil's Scientist
- Episode 8: Memory Starts to Talk
- Episode 9: The Trap of Project Build
- Episode 10: Technology of Destruction
- Episode 11: Burn, Dragon
- Episode 12: Conspiracy Theory
- Episode 13: Who Takes Off the Veil?
- Episode 14: The False Kamen Rider
- Episode 15: Judge Sento Kiryū!
- Episode 16: The Weaponry Hero
- Episode 17: The Outbreak of the Rider Wars
- Episode 18: The Golden Soldier
- Episode 19: The Forbidden Item
- Episode 20: Devil's Trigger
- Episode 21: The Unstoppable Hazard
- Episode 22: Victory of Tears
- Episode 23: The Phantom of the West
- Episode 24: The Man Called Rogue
- Episode 25: The Idol's Awakening
- Episode 26: The Treacherous Deathmatch
- Episode 27: The Counterattack Hero
- Episode 28: The Genius Arrives With a Tank
- Episode 29: The Opening Bell Rings
- Episode 30: The Truth of the Pandora Box
- Episode 31: Surge Out, Magma!
- Episode 32: Programmed Tragedy
- Episode 33: The Final Weapon: Evol
- Episode 34: The Best Match is Dissolved
- Episode 35: Tower of Destruction
- Episode 36: Evolto Hunts Planets
- Episode 37: The Ultimate Phase
- Episode 38: Mad World
- Episode 39: The Unstoppable Genius
- Episode 40: The Final Revolution
- Episode 41: The Truth of the Best Match
- Episode 42: Legacy of Doubt
- Episode 43: Another Build
- Episode 44: The End of Evolto
- Episode 45: The Scientist of Hope
- Episode 46: An Oath to Be the One
- Episode 47: Zero Degree Flames
- Episode 48: To a World of Love & Peace
- Episode 49: The Tomorrow Build Will Create
Kamen Rider Build Season 1 Conspiracy Theory
10 years ago when the Pandora Box was discovered on Mars and brought to Earth, it's activated and creates a Skywall which divides Japan into Touto, Seito, and Hokuto resulting into untold chaos. Along with creating a complex power dynamic between the three regions, the event brings waves of monsters called Smash down on the country, who terrorize and attack the citizens. Sento Kiryu, an amnesiac taken in by a mysterious cafe owner named Soichi Isurugi who provides him with a belt called the Build Driver that allows him to turn into Kamen Rider Build, which he uses to fight the Smash on his own.
