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Borderline of Justice (正義のボーダーライン, Seigi no Bōdārain) is the third episode of Kamen Rider Build. It features the debut of Build HawkGatling.
Synopsis[]
A man named Nabeshima appears within Ryuga's false murder case. He was the man who sent Ryuga to the house of the murder by using his girlfriend. Kagami and that man were the ones who injected Ryuga with the tranquilizing serum in order to take him towards the Human Body Experimentation Sector. In other words, there is a high possibility that there is a connection between the scientist's murder case and the Smash experiments. But how do we confirm this information on Nabeshima? Just when everyone was desperate for information, someone unexpected calls him by name. It was Misora!
Plot[]
- to be added
Cast[]
- Sento Kiryu (桐生 戦兎, Kiryū Sento): Atsuhiro Inukai (犬飼 貴丈, Inukai Atsuhiro)
- Ryuga Banjo (万丈 龍我, Banjyō Ryūga): Eiji Akaso (赤楚 衛二, Akaso Eiji)
- 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)
- Takumi Katsuragi (葛城 巧, Katsuragi Takumi): Yukiaki Kiyama (木山廉彬, Kiyama Yukiaki) (Uncredited, Photo Only)
- Gentoku Himuro (氷室 幻徳, Himuro Gentoku)/Night Rogue (ナイト・ローグ, Naito Rōgu): Kensei Mikami (水上剣星, Mikami Kensei)
- Soichi Isurugi (石動 惣一, Isurugi Souichi): Yasuyuki Maekawa (前川泰之, Maekawa Yasuyuki)
- Taizan Himuro (氷室 泰山, Himuro Taizan): Meikyo Yamada (山田明郷, Yamada Meikyō)
- Masakuni Mido (御堂正邦, Midō Masakuni): Norimasa Fuke (冨家規政, Fuke Norimasa)
- Yoshiko Tajimi (多治見 喜子, Tajimi Yoshiko): Ryoko Gi (魏 涼子, Gi Ryōko)
- Build Driver (ビルドドライバー, Birudo Doraibā, Voice): KORBY (コービー, Kōbī)
Guest Casts[]
- Masahiro Nabeshima (鍋島正弘, Nabeshima Masahiro): Ichi Oomiya (市オオミヤ, Ichi Ōmiya)
- Reika Kine (木根礼香, Kine Reika): Machiko Kochi (東風万智子, Kochi Machiko)
- Kota Kine (木根光多, Kine Kōta): Rui Takahashi (高橋 琉晟, Takahashi Rui)
- Igarashi (五十嵐 ): Yusuke Nagumo (南雲祐介, Nagumo Yūsuke)
- Student: Yuyu Ishida (石田結々, Ishida Yuyu), Keito Morikami (守上慶人, Morikami Keito)
Suit Actors[]
- Kamen Rider Build: Seiji Takaiwa (高岩 成二, Takaiwa Seiji)
- Night Rogue: Jun Watanabe (渡辺 淳, Watanabe Jun)
- Blood Stalk: Kazuya Okada (岡田 和也, Okada Kazuya)
- Flying Smash: Hajime Kanzaki (神前 元, Kanzaki Hajime)
- Mirage Smash: Satoshi Fujita (藤田 慧, Fujita Satoshi)
Fullbottles[]
- Bottle used:
- Build
- Biotic: Lion (in Build Phone), Rabbit, Gorilla, Taka
- Abiotic: Tank, Soujiki, Diamond, Gatling
- Ryuga
- Dragon
- Night Rogue
- Bat
- Blood Stalk
- Cobra
- Build
- Form used:
- Build
- RabbitTank Form, GorillaSoujiki Form, GorillaMond Form, HawkGatling Form
- Build
Errors[]
- When Sento transforms into Build while riding the Machine Builder, he holds the Build Driver with his left hand when he cranks the Vortech Lever with the right hand. But in the next shot, his left hand is on one of the Machine Builder's handles when he cranks the Build Driver's Vortech Lever.
Notes[]
- As part of Super Hero Time, this episode aired alongside Uchu Sentai Kyuranger
episode 30, Space.30: All Right! The Miraculous Kyutama
. Both episodes include Shishi Red and Build gaining new forms.
- Viewership: 4.6%
- Formula of the title: , (Set)
- Fullbottles Obtained: Taka

- Closing Screen Fullbottles:
- Kamen Rider: Build
- Fullbottles:
- Biotic: Taka
- Abiotic: Gatling
- Count at episode end
- Bottles in Build's possession:
- Biotic: Rabbit, Gorilla, Taka, Harinezumi, Lion, Kaizoku
- Abiotic: Tank, Diamond, Gatling, Soujiki, Light
- Bottles in Ryuga's possession: Dragon
- Bottles in Gentoku's possession:
- Biotic: Bat
- Abiotic: Rocket
- Bottles in Blood Stalk's possession: Cobra
- Bottles in Build's possession:
- This is the first time Build does not use the Harinezumi Fullbottle.
- This is the first time Build does not use the Tank Fullbottle to assume a Trial Form.
- This episode reveals that the Snap Ride Builder will move with the Rider while transforming. This was shown when Sento was riding the Machine Builder while transforming into Build.
- This episode features the debut of GorillaSoujiki, as well as the Kaizoku, Rocket and Light Fullbottles.
- Blood Stalk appears in a brief cameo at the end of the episode.
DVD/Blu-ray releases[]
- Kamen Rider Build Volume 1 features episodes 1-4: That One with the Best Match, The Innocent Runaway, Borderline of Justice and The Testimony Will Be Zero.
- Blu-ray Collection 1 comes with 12 episodes.