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Icon-build.png This article is about a/an weapon in Kamen Rider Build.

"Kaizoku Hassyar!"
―Summoning announcement[src]

"Kakueki Densya!"
―First tier charge announcement[src]

"Kyuukou Densya!"
―Second tier charge announcement[src]

"Kaisoku Densya!"
―Third tier charge announcement[src]

"Kaizoku Densya!"
―Fourth tier charge announcement[src]

―Tier 1-3 shot announcement[src]

―Final tier finisher announcement[src]

"Ready? Go! Pirate Finish! Ciao!"
―Summoning announcement via Evol-Driver[src]

The Departing Sailing Kaizoku Hassyar (出発出航 カイゾクハッシャー Shuppatsu Shukkō Kaizoku Hasshā) is a pirate and train-themed bladed bow-like weapon invented by Sento Kiryu and designed for Kamen Rider Build's KaizokuRessya Form. It is available to him in any form using the Kaizoku or Densya Fullbottles.


The Kaizoku Hassyar consists of the following parts:

  • Cutlass Anchor Edge (カトラスアンカーエッジ Katorasu Ankā Ejji) - A blade attached on the tip of the Hassyar. It is very sharp and is very effective in ripping or piercing attacks. Outside of combat, the blade is wrapped in a transparent protective shell, so it is safe to hold.
  • The Build Arrow (ビルドアロー号 Birudo Arō-gō) - A train type attacking unit. After pulling back the Build Arrow to the Train Home Charger, the user can shoot by simply releasing it.
  • The Build Ocean (ビルドオーシャン号 Birudo Ōshan-gō) - The unit where the Build Arrow's energy is discharged. Themed after a pirate ship.
  • Vortex Trigger (ボルテックトリガー Borutekku Torigā) - The trigger of the Hassyar. By timing correctly, the energy inside the Hassyar can be doubled.
  • Blade Grip (ブレイグリップ Burei Gurippu) - The grip of the Hassyar. The motion detecting system within it optimizes the Hassyar's own behavior at the time of the attack by analyzing the enemy's behavior, and the user's own habits.
  • Train Home Charger (トレインホームチャージャー Torein Hōmu Chājā) - The rear end of the bow. Supplies energy to the Build Arrow when it is pulled back. In addition, it also announces which level of power is going to be fired through the "- Densya" announcements.

Special Attacks

The Kaizoku Hassyar's shots can be charged by pulling back the Build Arrow and holding it before letting go. Charging the Kaizoku Hassyar escalates its shot through three of the four tiers. While performing any of these attacks, the Kaizoku Hassyar announces Shuppatsu (出発 lit. Departure).


The Kaizoku Hassyar's finisher is the Kaizoku Densya (海賊電車 lit. Pirate Train). It is performed by pulling back the Build Arrow and holding it until it reaches the final tier. While performing this finisher, the Kaizoku Hassyar announces Hassha (発射 lit. Fire). This finisher has three variations:

  • Build fires a green and azure energy train from the Kaizoku Hassyar that not only rams into the enemy, but shoots azure energy discs as well.
  • In KaizokuRessya Hazard Form, Build fires a large stream of green and blue energy.
  • MadRogue summons the Kaizoku Hassyar and fires a green and azure energy train that rams into the enemy several times.



  • The Kaizoku Hassyar's design resembles an anchor on its side.
  • As the Kaizoku Hassyar can function both as an energy bow and a melee weapon, it bears a similarity to the Sonic Arrow.
  • The Kaizoku Hassyar's full name is a play on "Shuppatsu Shinkō!" (出発進行 lit. "All aboard!"); this phrase is also used in the train-themed Ressha Sentai ToQgerIcon-crosswiki.png when the heroes go into battle.
    • The usage of a small train item in the track of the weapon is also similar to the ToQgers Team Arsenal, Renketsu BazookaIcon-crosswiki.png.
  • The Hassyar's official romanization may be a play on the classic pirate grunt, "yar!"
  • This was the first weapon built after Sento first transformed into its Best Match, though he'd previously predicted the Match and had drawn up ideas for the weapon.



Icon-build.png Kamen Rider Build
Kamen Riders
Sento Kiryu (Takumi Katsuragi) - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi
Movie-exclusive: Kengo Ino - Killbus - Keiji Uraga
Drivers/Transformation Gear
Build Driver - Transteam Gun - Nebulasteam Gun - Sclash Driver - Evol-Driver
Transformation Devices
Fullbottles - (Great) Cross-Z Dragon - Sclashjellies - Hazard Trigger - Cross-Z Magma Knuckle - Evol-Trigger - Grease Blizzard Knuckle - Killbuspider - Grease Perfect Kingdom
Drill Crusher - Hawk Gatlinger - 4Koma Ninpoutou - Kaizoku Hassyar - Fullbottle Buster - Steam Blade - Beat Closer - Twin Breaker - Muscle Glove - Solstall Wings - Giant Scratcher - Space Ride Arm - Spine Knuckle - Long Range Cleaner - Trash Converter - Gold Lio Gauntlet - Multi Deluge Gun
Pandora Box - Halfbodies - Fullbottle Holder - Build Phone
Vortex Finish - Hazard Level - Project Build - Sky Wall - Nebula Gas
nascita: Misora Isurugi - Soichi Isurugi - Sawa Takigawa - Kazumi Sawatari - Gentoku Himuro
Kamen Riders: Eiji Hino - Gentaro Kisaragi - Kouta Kazuraba - Takeru Tenkuji - Emu Hojo - Hiiro Kagami - Taiga Hanaya - Kiriya Kujo - Kuroto Dan - Parado - Sougo Tokiwa - Geiz Myokoin - Tsukuyomi
Prime Ministers: Taizan Himuro (Touto) - Yoshiko Tajimi (Hokuto) - Masakuni Mido (Seito)
Namba Heavy Industries Ltd.: Juzaburo Namba - Nariaki Utsumi - Haruhiko Wanibuchi - Guardian
Hell Bro's: Fu Washio - Rai Washio - Yoshikazu Takahashi - Norio Matsui
Aliens: Vernage
Gentoku Himuro - Evolto - Nariaki Utsumi - Takumi Katsuragi - Shingo Kuwata - Eita Kawai - Yoshikazu Takahashi - Norio Matsui
Normal Smash: Fang Smash - Needle Smash - Strong Smash - Burn Smash - Flying Smash - Mirage Smash - Square Smash - Press Smash - Ice Smash - Stretch Smash
Empowered Smash: Strong Smash Hazard - Press Smash Hazard - Stretch Smash Hazard - Flying Smash Hazard
Hard/Hazard Smash: Castle Hard/Hazard Smash - Stag Hard/Hazard Smash - Owl Hard/Hazard Smash
Clone Smash: Press Clone Smash - Stretch Clone Smash - Strong Clone Smash - Flying Clone Smash
Lost Smash: Owl Lost Smash - Stag Lost Smash - Castle Lost Smash - CD Lost Smash - Scissors Lost Smash - Zebra Lost Smash
Foundation X
Kaisers: Kaisei Mogami (World of Build, World of Ex-Aid) - Nebula Bugster
Blood Tribe
Kengo Ino - Ryoka Saiga - Mitsuomi Gobara - Evolto - Killbus - Akaba (imitation) - Aoba (imitation) - Kiba (imitation) - Remocon Bro's (imitation) - Engine Bro's (imitation)
Down Fall
Keiji Uraga - Simon Marcus (Phantom Crusher)