The Forbidden Item

The Forbidden Item (禁断のアイテム Kindan no Aitemu) is the 19th episode of the series Kamen Rider Build. It features a new form used by Sento Kiryu, or Kamen Rider Build, PhoenixSoujiki. The new Fullbottle shown in this episode is the Keshigomu (Eraser) Fullbottle. The three Hokuto Three Crows unlock a new form, Hazard Smash and the Hazard Trigger is revealed.

The air date of this episode was January 21st, 2018. The writer of this episode is Shogo Muto, and is was directed by Shojiro Nakazawa.



The episode starts off with Nariaki Utsumi explaining how is he not as seem to be dead. He explains that after he was shot and fell, Blood Stalk came to rescue him and tugged him out of the water.

Gentoku Himuro later asks Utsumi a few questions, while getting more frustrated. Soon enough, two Touto minions show up, to back up Gentoku and attempt to shoot Utsumi. Utsumi then turned around, to tell Gentoku a bit more words of information...

Later, the Hokuto Three Crows, plus the leader, Kazumi Sawatari was in Barber Kiryuu. Some of the members started complaining of them meeting at that area, and started discussing about Miitan. They changed the subject escalated to Sento Kiryuu and wanted to know clarifications of why did Miitan helped Build. Akaba suggested that Miitan may be Sento's girlfriend, but Kazumi refused to believe that, claiming that Miitan is everyone's favorite idol. Kazumi stated that he wanted to meet Sento and ask about him.

Sooner later, Sento meets up with Grease, and his crows. Grease, in a serious mood, demands for the answer of why did Miitan helped Sento, which caused everyone in the scene to start toppling, and urging back to their composure. Sento then explains that the person who helped them, wasn't actually Miitan, which gave Kazumi a big relief. As Sento and Ryuuga Banjou transforms, the four opponents gather together and chant Miitan's name in relief, before Grease turns back to Build and Cross Z, claiming that he feels relief. The moment he looked back, they were transformed already, and they started fighting.

During the fight, Cross Z Charge started buzzing a blue electric line around his body, which shows that he is not compatible with such high Hazard Level.

Unexpectedly, Blood Stalk came to the scene, which turned Grease to annoyance, and then demanding for an explanation of why did he had to disturb their battle. Blood Stalk claims that he haven't checked their Hazard levels for a long time, and maybe it's the perfect moment to. He kick dash himself under everyone while jabbing his finger into their flesh. After he took all their samples, he exclaimed all of their levels and told Grease to stop fighting. It was Toshiko Tajimi's orders.

Hokuto's prime minister. What could he do?

He took out the Keshigomu Fullbottle and used the eraser powers to wipe away himself and his buddies along with him. Cross Z and Build reverted back to normal, which caused Ryuuga to collapse. Sento looked at him and saw the belt. He told Ryuuga that his Hazard isn't high enough, before snatching it from it.

Later, they are in the Nascita Caffe, while Ryuuga drinks a few bottles. Sento stuck out his arm to grasp the belt, which Ryuuga successfully managed to steal back, and claim it as his. Sento knew he couldn't handle it, but oh well!

Misora later found Ryuuga all alone, and asked why is he fighting for. Ryuuga later explained to Misora that he was fighting all to stop the war, before sliding down a slide with a small scream.

Back at the Hokuto hideout, Toshiko and Blood Stalk were discussing about their Hazard levels, before Kazumi entered the scene. Blood Stalk started discussing to Kazumi about making the three crows into Hazard Hard Smashes, which will cause them to die, once they revert back. Kazumi didn't buy it, he couldn't risk his partners dying.

After talking to him and he went away, Toshiko called out the three crows who discussed about turning themselves into the Hazard Hard Smash.

Meanwhile in the Nascita Caffe, Sawa approaches Sento and Ryuuga and explains about Kazumi. She told them that they he was a farmer, who later became best friends with the Hokuto Three Crows.

Back at the Hokuto hideout, the three are already getting experimented. Aoba explains that he does not want the leader to only hog up the glory before entering the machine. Kiba stepped out before falling limp to a bed, saying that the boss would finally see help in them.

Later, he was ordered to go and snatch the Fullbottles. Gentoku later reported about his theft, Ryuuga and Sento later goes check it out. As they went there, they found Kazumi who transformed. Sento and Ryuuga transforms to.

As they fought, they broke a hole in the building, and throwing themselves out. Grease was getting too badly beaten up, before his crows showed up. Grease yelled at them, describing of how they were late. They simply told him to not be surprised, and he had a bad thought. They took out their Fullbottles and inserted it to themselves. Grease in frustration, makes them hurry fight them. They started.

They mainly focused on Cross Z Charge and then Build, before making some of the Fullbottles roll out of hand. After taking the Fullbottles, Grease called it a day and told them to leave. They complained that all the Fullbottles hasn't been retrieved, but he took out the Helicopter Fullbottle already. They hanged on his foot before he flew back to his hideout.

Build and Cross Z watched them for a few minutes, before transforming back...

Cast

• Sento Kiryu (桐生 戦兎 Kiryū Sento): Atsuhiro Inukai (犬飼 貴丈 Inukai Atsuhiro)
• Ryuga Banjou (万丈 龍我 Banjyō Ryūga): Eiji Akaso (赤楚 衛二 Akaso Eiji)
• Kazumi Sawatari (猿渡 一海 Sawatari Kazumi): Kouhei Takeda (武田 航平 Takeda Kōhei)
• Misora Isurugi (石動 美空 Isurugi Misora): Kaho Takada (高田 夏帆 Takada Kaho)
• Nariaki Utsumi (内海 成彰 Nariaki Utsumi): Yuki Ochi (越智 友己 Ochi Yūki)
• Sawa Takigawa (滝川 紗羽 Takigawa Sawa): Yukari Taki (滝 裕可里 Taki Yukari)
• Gentoku Himuro (氷室 幻徳 Himuro Gentoku): Kensei Mikami (水上剣星 Mikami Kensei)
• Yoshiko Tajimi (多治見 喜子 Tajimi Yoshiko): Ryoko Gi (魏 涼子 Gi Ryōko)
• Akaba (赤羽): Eishin (栄信)
• Aoba (青羽): Tateto Serizawa (芹澤興人 Serizawa Tateto)
• Kiba (黄羽): Takuya Yoshimura (吉村卓也 Yoshimura Takuya)
• Blood Stalk (ブラッドスターク Buraddo Sutāku, Voice): Tetsuo Kanao (金尾 哲夫 Kanao Tetsuo)
• Masuzawa (増沢): Taro Nakatani (中谷太郎 Nakatani Tarō)  
• Build Driver (ビルドドライバー Birudo Doraibā, Voice): KORBY (コービー Kōbī)
• Sclash Driver (スクラッシュドライバー Sukurasshu Doraibā, Voice): Norio Wakamoto (若本 規夫 Wakamoto Norio)

Suit Actors

• Kamen Rider Build: Seiji Takaiwa (高岩 成二 Takaiwa Seiji)
• Kamen Rider Cross-Z Charge: Eitoku (永徳)
• Kamen Rider Grease: Satoshi Fujita (藤田 慧 Fujita Satoshi)
• Blood Stalk: Kazuya Okada (岡田 和也 Okada Kazuya)
• Castle Hard/Hazard Smash: Yuji Nakata (中田 裕士 Nakata Yuji)
• Stag Hard/Hazard Smash: Kotaro Kaji (鍜治 洸太朗 Kaji Kōtarō)
• Owl Hard/Hazard Smash: Hajime Kanzaki (神前 元 Kanzaki Hajime)