Season 1
49 episodes · Sep 3, 2017
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S1E1These Two Are A Best Match
Sep 3, 201724mUnidentified creatures called Smash have appeared at Touto, Sento Kiryu turns into Kamen Rider Build to fight against them. One day, he saves a guy named Ryuga Banjo who escaped from a prison.
S1E2Innocent Runaway
Sep 10, 201724mBecause of helping Ryuga, the government chased Build as a wanted criminal. Sento guesses that he can obtain clues to the mysterious organization by finding true culprit who killed Katsuragi.
S1E3Borderline of Justice
Sep 17, 201724mSento follows the clues regarding Nabeshima, the man responsible for framing Ryuga.
S1E4The Testimony Will Be Zero
Sep 24, 201724mAfter getting another of his memories back, Sento investigates the connection between Faust's experiments and the Pandora Box; Ryuga tracks down Nabeshima's family and stands up to protect them from the enemy.
S1E5Dangerous Identity
Oct 1, 201724mWhile confronting Souichi about his connection with Faust, Sento is informed by Sawa about a hint regarding a person who may know his true identity.
S1E6Moonsault of Anger
Oct 8, 201724mRyuga deceives Sento, and tries to find Faust's hideout by himself.
S1E7The Devil's Scientist
Oct 15, 201724mThere is a possibility that true culprit who killed Katsuragi was Sento, but Sento have lost his memory. Ryuga feels a distrust for Sento.
S1E8Memory Starts to Talk
Oct 22, 201724mSento discovers that Katsuragi was the founder of Faust, and approaches his mother to learn more about Katsuragi's intentions, and obtain more clues regarding his lost memories.
S1E9The Trap of Project Build
Oct 29, 201724mSento and Ryuga discover that Katsuragi was involved in creating a Build Driver of his own, and his possible involvement with Sento widens the distrust between them.
S1E10Technology of Destruction
Nov 12, 201724mUpon learning of Faust's plan to steal the Pandora Box, Sento and Ryuga set out to Touto Institute of Advanced Matter Physics to protect it.
S1E11Burn, Dragon
Nov 19, 201724mIf Blood Stalk's identity is Katsuragi, Ryuga can prove his innocence. But Sento can't control Key-Dragon form's power.
S1E12Conspiracy Theory
Nov 26, 201724mAfter learning from Sawa about the connection between Faust and Nanba Heavy Industries, Sento and Ryuga confront them to retrieve the Pandora Box and their stolen Full Bottles.
S1E13Who Takes Off the Veil?
Dec 3, 201724mSento gets a terrible shock, because he learns the identity of the wirepuller from Nabeshima who regained his memory.
S1E14The False Kamen Rider
Dec 10, 201724mAn expected person steals Pandora Box, Panels and Bottles from Sento.
S1E15Judge Sento Kiryū!
Dec 17, 201724mSento and guys were driven into a situation where they had to hide Pandora Box in a old warehouse. They make a decision to uncover a government conspiracy.
S1E16The Weaponry Hero
Dec 24, 201724mIt's revealed the real facts of the case that Katsuragi was murdered.
S1E17The Outbreak of the Rider Wars
Jan 7, 201824mAs the three countries start a war, both Sento and Ryuga must decide what to do next.
S1E18The Golden Soldier
Jan 14, 201824mSento confronts Kazumi Sawatari, an assassin from Hokuto, wondering how the enemy got his hands on his latest invention.
S1E19The Forbidden Item
Jan 21, 201824mWith he and Ryuga unable to beat Kazumi and his men with their current strength, Sento searches the files left by Takumi to look for an alternative.
S1E20Devil's Trigger
Jan 28, 201824mSoichi approaches Sento and gives him an item that can stop Ryuga's rampage, but using it involves a huge risk.
S1E21The Unstoppable Hazard
Feb 4, 201824mDespite knowing the risks, Sento uses the Hazard Trigger to empower himself against Kazumi's three subordinates. After losing his consciousness and killing one of them, Sento is struck with guilt and refuses to keep fighting, until Soichi gives him an alternative.
S1E22Victory of Tears
Feb 11, 201824mSento and Kazumi have a duel to settle the war, but when the enemy proves himself too strong for him, Sento has no option but to use the Hazard Trigger again.
S1E23The Phantom of the West
Feb 18, 201824mTaking advantage of the conflict, Seito invades and conquers Hokuto. Now bent on seizing all of Japan, the Seito forces invade Touto, led by the mysterious Kamen Rider Rogue.
S1E24The Man Called Rogue
Feb 25, 201824mGentoku reappears as Kamen Rider Rogue, determined to get revenge on Touto. To stop him, the other Kamen Riders decide to join forces, when Sento perceives something strange happening with Misora.
S1E25The Idol's Awakening
Mar 4, 201824mJust as Gentoku is about to finish off Sento and the others, Misora appears before them, and the secret behind her mysterious powers is revealed.
S1E26The Treacherous Deathmatch
Mar 11, 201824mSeito challenges Touto for another proxy battle to end the war once and for all. Sento and his friends make preparations to confront Gentoku and his subordinates, unaware that one among them is a traitor.
S1E27The Counterattack Hero
Mar 18, 201824mThe proxy battle to end the war is tied with one victory to each side, and for the decisive bout against Gentoku, Sento unleashes a new power.
S1E28The Genius Arrives With a Tank
Mar 25, 201824mDespite using his new powers, Sento is having a hard time against Gentoku, and Sawa reveals to the others the reasons for her betrayal.
S1E29The Opening Bell Rings
Apr 1, 201824mThe war between the nations has ended, but Soichi and Namba finally reveal their true intentions as a new conflict begins when they open the Pandora Box.
S1E30The Truth of the Pandora Box
Apr 8, 201824mVernage, the Queen of Mars possesses the body of Misora to assist the Riders in retrieving the Pandora Box, revealing an important secret about Ryuga in the occasion.
S1E31Surge Out, Magma!
Apr 15, 201824mAs the Riders invade the Pandora Tower to retrieve the Pandora Box, a new power bursts from Ryuga, just as questions about his true identity are raised.
S1E32Programmed Tragedy
Apr 22, 201824mDoubtful about his own origins, and eager to know the reason why he was framed in the first place, Ryuga confronts Blood Stalk demanding for answers.
S1E33The Final Weapon: Evol
Apr 29, 201824mTouto's Prime Minister, Taizan Himuro is kidnapped, and Blood Stalk demands Sento to develop a new driver for him in exchange for his life.
S1E34The Best Match is Dissolved
May 6, 201824mHaving attained the power to transform into Kamen Rider Evol, Evolto infects Sento with a poison, threatening his life should he not relinquish the Fullbottles in his possession.
S1E35Tower of Destruction
May 13, 201824mEvolto is close to attain all Fullbottles and the Pandora Box, and with Ryuga under the enemy's control, Sento turns to Gentoku for help.
S1E36Evolto Hunts Planets
May 20, 201824mHaving finally opened the Pandora Box, Evolto almost destroyed the world, should Vernage had not interfered. However, Sento has run out of options, and decides to risk it all in a move to defeat him.
S1E37The Ultimate Phase
May 27, 201824mEvolto avoided his destruction by possessing Sento's body. Now unable to transform, Ryuga looks for a way to save his friend.
S1E38Mad World
Jun 3, 201824mEvolto reaches his full potential and seems unstoppable, while Sento recovers his memories as Katsuragi.
S1E39The Unstoppable Genius
Jun 10, 201824mTo face the full power of Evolto and Utsumi, Sento combines the power of all Full Bottles to unleash his most powerful form.
S1E40The Final Revolution
Jun 17, 201824mSurprised with the advent of Build's new form, Evolto decides to begin the last steps of his master plan.
S1E41The Truth of the Best Match
Jun 24, 201824mSento discover that his father is alive, and by searching the files he got from his mother, he learns why the Rabbit and Tank Full Bottles have a special meaning to him.
S1E42Legacy of Doubt
Jul 1, 201824mWith Sento confused with the fact that his father might be in league with Evolto, another person transformed into Kamen Rider Build appears before him.
S1E43Another Build
Jul 8, 201824mAs Sento still tries to figure out his father's true motives, Misora is kidnapped by Evolto and transformed into a Smash.
S1E44The End of Evolto
Jul 15, 201824mKazumi and Gentoku infiltrate Faust's headquarters in Hokuto, but Utsumi appears to face them. Meanwhile, Sento confronts his father, who reveals the true reason why he joined forces with Evolto.
S1E45The Scientist of Hope
Jul 22, 201824mEvolto has been defeated, and Shinobu reveals to the Riders his true objective.
S1E46An Oath to Be the One
Jul 29, 201824mWith Evolto one step closer from reaching his objective, Sento and the others prepare themselves for the final battle.
S1E47Zero Degree Flames
Aug 12, 201824mDespite Sento's warnings, Kazumi uses the Blizzard Knuckle to attain a new, powerful form, knowing that he may not survive the transformation.
S1E48To a World of Love & Peace
Aug 19, 201824mWith no time to mourn for Kazumi's death, Sento, Ryuga and Gentoku brace themselves for the final battle against a full-powered Evolto.
S1E49The Tomorrow Build Will Create
Aug 26, 201824mAfter the sacrifice of his companions, it falls to Sento to protect the world by defeating Evolto once and for all.