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The cover art of volume 1
"HEAVY OBJECT" (ヘヴィーオブジェクト) is a science fiction series by Kazuma Kamachi (鎌池 和馬) and illustrated by Ryou Nagi(凪良) published under the Dengeki light novel label. Currently six volumes have been published. There is also a manga adaptation previously serialized in the monthly magazine of Dengeki Maou.

The Heavy Object series is also available in the following languages:

Story Synopsis

In the end, war couldn't be extinguished. But, there was a transformation. Even in the heart of a worthless accomplice in murder who was indifferently continuing his task, there was a transformation. The massive weapon "Object". This was a weapon that changed the whole definition of war. An exchange student named Quenser, who was dispatched to the battlefield, met at the base a girl with a strange aura. The girl, dubbed "Elite", is the pilot of "Object". The near future. This diminutive boy had come to take on the role of standing up against the strongest weapon "Object" for the sake of the girl. This was the motive for their first meeting.



Translators are asked to register which chapters they are working on

Format Standards

Every Chapter (after editing) must conform to the general format guidelines


If you enjoyed the series, why don't you tell us in the Discussion Thread and give the project a vote


  • February 5, 2013 Heavy Object Vol.6 completed.
  • December 12, 2012 Heavy Object Vol.5 completed.
  • September 19, 2012 Heavy Object Vol.4 completed.
  • August 22, 2012 Heavy Object Vol.3 completed.
  • July 2, 2012 Heavy Object Vol.2 completed.
  • February 22, 2012 Heavy Object Vol.1 completed.
  • July 23, 2011: Project Page Created. Forum translations by DNK uploaded.


Volume 1 (Full Text - PDF - ePUB/MOBI)

Volume 2: Adoption War — An Audition War (Full Text - PDF)

Volume 3: Shadow of the Giants — Global Shadow (Full Text - PDF)

Volume 4: Treasure of Electron Mathematics — Theoretical Vein (Full Text - PDF)

Volume 5: Festival of Death — Purge of Technopics (Full Text - PDF - Mobi)

Volume 6: Path to the Third Generation — The Coming of Third Generation (Full Text - PDF - MOBI )

Volume 7: The Police of Ghosts

Short Story

This short story was published shortly after the release of the first Heavy Object novel.

Project Staff

  • Project Administrator: N/A
  • Project Supervisor: N/A




All editors who speak English proficiently are welcomed.

  • Page Checkers
  • Proofreaders

Series Overview

  • ヘヴィーオブジェクト / HEAVY OBJECT (10 OCT 2009, ISBN 978-4-04-868069-1)
  • ヘヴィーオブジェクト 採用戦争 / HEAVY OBJECT Saiyou Sensou (10 JUN 2010, ISBN 978-4-04-868594-8)
  • ヘヴィーオブジェクト 巨人達の影 / HEAVY OBJECT Kyojin tachi no Kage (10 NOV 2010, ISBN 978-4-04-870051-1)
  • ヘヴィーオブジェクト 電子数学の財宝 / HEAVY OBJECT Denshi Suugaku no Zaihou (10 SEP 2011, ISBN 978-4-04-870549-3)
  • ヘヴィーオブジェクト 死の祭典 / HEAVY OBJECT Shi no Saiten (10 NOV 2011, ISBN 978-4-04-870997-2)
  • ヘヴィーオブジェクト 第三世代への道 / HEAVY OBJECT Daisansedai e no Michi (10 JUN 2012, ISBN 978-4-04-886624-8)
  • ヘヴィーオブジェクト 亡霊達の警察 / HEAVY OBJECT Bourei tachi no Keisatsu (9 NOV 2013, ISBN 978-4-04-866080-8)