S1 E1 • The Ones That Match The Best!

Ten years ago, the Mars probe brought back the Pandora Box, which emitted a light that caused the ground to raise, and a massive wall to appear. Society has called this the "Skywall Tragedy". Japan has been separated into three sections, with three capital cities known respectively as Hokuto, Seito, and Touto. They were all in conflict with one another. It is now present day. In Touto, mysterious unidentified lifeforms called the Smash appear. Sento Kiryu secretly transforms into Kamen Rider Build, and he's sent day after day to fight against the Smash. However, Sento has no memories of the last 20 years. He only remembers, "A scientist in a gas mask, human test subjects, and a bat man". What on earth does all of this mean? Sento is employed at the Touto Institute of Advanced Matter Physics. While continuing to fight as Build, he will also be responsible for unraveling the mystery of the Pandora Box as a researcher. It's at this time that Ryuga Banjo makes a jailbreak in the middle of serving a prison sentence for murder. The Smash detected Ryuga and reacted to him. Sento tries to catch Ryuga, but Ryuga tells him an unexpected fact to try to prove his innocence.

Première diffusion : 3 septembre 2017

S1 E2 • Innocent Runaway

Because Build saved a jail breaking murderer whom he believes is innocent from the Touto government, he is now labeled as a wanted fugitive. At home, Sento listens to Ryuga's situation, which may lead to solving the mystery of his memories. While visiting a scientist, Takumi Katsuragi, who Ryuga was supposed to have killed, the police surrounded the room at the moment when Ryuga discovers Takumi's body. There's a possibility that he was framed. It was supposed to be Ryuga who was unable to reveal anything else, but he suddenly escapes from the base, forcing Sento to go after him...

Première diffusion : 10 septembre 2017

S1 E3 • Borderline of Justice

Sento and his friends follow the clues regarding Nabeshima, the man responsible for framing Ryuga. When Ryuga contacts Nabeshima, he agrees to protect Nabeshima's family, unaware that a trap is waiting for him.

Première diffusion : 17 septembre 2017

S1 E4 • The Testimony Will Be Zero

After getting another of his memories back, Sento investigates the connection between Faust's experiments and the Pandora Box. Meanwhile, Ryuga tracks down Nabeshima's family and stands up to protect them from the enemy.

Première diffusion : 24 septembre 2017

S1 E5 • Dangerous Identity

While confronting Souichi about his connection with Faust, Sento is informed by Sawa about a hint regarding a person who may know his true identity.

Première diffusion : 1 octobre 2017

S1 E6 • Moonsault of Anger

Ryuga interferes with Sento's attempt to rescue his friend Tatsuya, intending to use Tatsuya to track down Faust's base. Now Sento not only is forced to fight Tatsuya again to save him, but must confront Ryuga as well.

Première diffusion : 8 octobre 2017

S1 E7 • The Devil's Scientist

Now suspicious that he may be the responsible for the murder of the scientist Katsuragi, Sento's doubts about his true character increase, unaware that the enemy is closer than he thinks.

Première diffusion : 15 octobre 2017

S1 E8 • Memory Starts to Talk

Sento 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.

Première diffusion : 22 octobre 2017

S1 E9 • The Trap of Project Build

Sento 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.

Première diffusion : 29 octobre 2017

S1 E10 • Technology of Destruction

Upon 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.

Première diffusion : 12 novembre 2017

S1 E11 • Burn, Dragon

Faust stole the Pandora Box and almost all of Sento's Fullbottles. One of his few remaining ones, the Dragon Fullbottle, is proven too strong for his current powers, until he comes with an idea.

Première diffusion : 19 novembre 2017

S1 E12 • Conspiracy Theory

After learning from Sawa about the connection between Faust and Nanba Heavy Industries, Sento and Ryūga confront them to retrieve the Pandora Box and their stolen Full Bottles.

Première diffusion : 26 novembre 2017

S1 E13 • Who Takes Off the Veil?

After learning the truth from Nabeshima once he had regained his memories, Sento confronts Blood Stalk to retrieve the Pandora Box.

Première diffusion : 3 décembre 2017

S1 E14 • The False Kamen Rider

Sento discovers that Sōichi, the man who sheltered him is actually Blood Stalk, leading to a decisive battle between them.

Première diffusion : 10 décembre 2017

S1 E15 • Judge Sento Kiryū!

Sento retrieved the Pandora Box from Sōichi, but the revelation that Night Rogue is Gentoku Himuro makes him realize that now the entire Touto government is his enemy.

Première diffusion : 17 décembre 2017

S1 E16 • The Weaponry Hero

Upon Gentoku's revelation that he and Takumi are the same person, Sento falls into guilt, and a furious Ryūga challenges him to a battle, just when a third, mysterious Kamen Rider appears.

Première diffusion : 24 décembre 2017

S1 E17 • The Outbreak of the Rider Wars

As Touto is invaded by Hokuto, Gentoku asks for Sento and Ryūga's help, and the Riders must decide what to do next.

Première diffusion : 7 janvier 2018

S1 E18 • The Golden Soldier

Sento confronts Kazumi Sawatari, an assassin from Hokuto, wondering how the enemy got his hands on his latest invention.

Première diffusion : 14 janvier 2018

S1 E19 • The Forbidden Item

With he and Ryūga unable to beat Kazumi and his men with their current strength, Sento searches the files left by Takumi to look for an alternative.

Première diffusion : 21 janvier 2018

S1 E20 • Devil's Trigger

Sōichi approaches Sento and gives him an item that can stop Ryūga's rampage, but using it involves a huge risk.

Première diffusion : 28 janvier 2018

S1 E21 • The Unstoppable Hazard

Despite 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.

Première diffusion : 4 février 2018

S1 E22 • Victory of Tears

Sento 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.

Première diffusion : 11 février 2018

S1 E23 • The Phantom of the West

Taking 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.

Première diffusion : 18 février 2018

S1 E24 • The Man Called Rogue

Gentoku 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.

Première diffusion : 25 février 2018

S1 E25 • The Idol's Awakening

Just as Gentoku is about to finish off Sento and the others, Misora appears before them, and the secret behind her mysterious powers is revealed.

Première diffusion : 4 mars 2018

S1 E26 • The Treacherous Deathmatch

Seito 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.

Première diffusion : 11 mars 2018

S1 E27 • The Counterattack Hero

The 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.

Première diffusion : 18 mars 2018

S1 E28 • The Genius Arrives With a Tank

Despite using his new powers, Sento is having a hard time against Gentoku, and Sawa reveals to the others the reasons for her betrayal.

Première diffusion : 25 mars 2018

S1 E29 • The Opening Bell Rings

The war between the nations has ended, but Sōichi and Namba finally reveal their true intentions as a new conflict begins when they open the Pandora Box.

Première diffusion : 1 avril 2018

S1 E30 • The Truth of the Pandora Box

Vernage, the Queen of Mars possesses the body of Misora to assist the Riders in retrieving the Pandora Box, revealing an important secret about Ryūga in the occasion.

Première diffusion : 8 avril 2018

S1 E31 • Surge Out, Magma!

As the Riders invade the Pandora Tower to retrieve the Pandora Box, a new power bursts from Ryūga, just as questions about his true identity are raised.

Première diffusion : 15 avril 2018

S1 E32 • A Programmed Tragedy

Doubtful about his own origins, and eager to know the reason why he was framed in the first place, Ryūga confronts Blood Stalk demanding for answers.

Première diffusion : 22 avril 2018

S1 E33 • The Final Weapon: Evol

Touto's Prime Minister, Taizan Himuro was kidnapped by Rogue! Why? The answer is revealed through Sōichi who is possessed by Evolt: "Prepare the Evol Driver in exchange for Taizan Himuro's life." But just what is the Evol Driver? Sento was confused as well until he finds plans for the design of this ultimate Driver contained within the research data belonging to his father, Shinobu Katsuragi.

Première diffusion : 29 avril 2018

S1 E34 • The Severing Best Match

Kamen Rider Evol was born, and the first victim of his power was Taizan Himuro, the prime minister of Touto! Evolto now engages a full-scale onslaught to complete the Pandora Box, and his next target is Sento. Evolto infects Sento with an alien poison that can only be cured by Evolto. Because of this, Sento’s life is on a deadline as he demands the remaining Fullbottles and the Pandora Box in exchange for Sento’s life. Just what will the remaining Riders do now?!

Première diffusion : 6 mai 2018

S1 E35 • The Tower of Destruction

Evolto is close to attain all FullBottles and the Pandora Box, and with Ryūga under the enemy's control, Sento turns to Gentoku for help.

Première diffusion : 13 mai 2018

S1 E36 • Evolto Hunts Stars

Having finally opened the Pandora Box, Evolto is about to destroy the entire world, until Vernage makes a move.

Première diffusion : 20 mai 2018

S1 E37 • The Ultimate Phase

Evolto avoided his destruction by possessing Sento's body. Unable to transform, Ryūga looks for a way to save his friend.

Première diffusion : 27 mai 2018

S1 E38 • Mad World

Evolto reaches his full potential and seems unstoppable, while Sento recovers his memories as Katsuragi.

Première diffusion : 3 juin 2018

S1 E39 • The Genius Can't Stop

To face the full power of Evolto and Utsumi, Sento combines the power of all Fullbottles to unleash his most powerful form.

Première diffusion : 10 juin 2018

S1 E40 • The Final Revolution

Surprised with the advent of Build's new form, Evolto decides to begin the last steps of his master plan.

Première diffusion : 17 juin 2018

S1 E41 • The Truth of the Best Match

Sento discover that his father is alive, and by searching the files he got from his mother, he learns why the Rabbit and Tank Fullbottles have a special meaning to him.

Première diffusion : 24 juin 2018

S1 E42 • Legacy Of Doubt

With Sento confused with the fact that his father might be in cahoots with Evolto, another person transformed into Kamen Rider Build appears before him.

Première diffusion : 1 juillet 2018

S1 E43 • Another Build

As Sento still tries to figure out his father's true motives, Misora is kidnapped by Evolto and transformed into a Smash.

Première diffusion : 8 juillet 2018

S1 E44 • The End of Evolto

Kazumi 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.

Première diffusion : 15 juillet 2018

S1 E45 • The Scientist of Hope

With Evolto defeated, Shinobu reveals his true objective to the Riders.

Première diffusion : 22 juillet 2018

S1 E46 • An Oath to Be The One

Première diffusion : 29 juillet 2018

S1 E47 • Zero Degree Fire

Despite Sento's warnings, Kazumi uses the Blizzard Knuckle to attain a new, powerful form, knowing that he will not survive the transformation.

Première diffusion : 12 août 2018

S1 E48 • To the World of Love & Peace

With no time to mourn for Kazumi's death, Sento, Ryūga and Gentoku brace themselves for the final battle against a full-powered Evolto

Première diffusion : 19 août 2018

S1 E49 • The Tomorrow Build Will Create

After the sacrifice of his companions, it's up to Sento to protect the world by defeating Evolto once and for all.

Première diffusion : 26 août 2018