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Front cover of the first volume of Heavy Object, featuring Milinda Brantini.

Heavy Object (ヘヴィー・オブジェクト Hevii Obujekuto?) is a light novel series authored by Kamachi Kazuma and illustrated by Nagi Ryo, published by ASCII Media Works under the Dengeki Bunko imprint. Heavy Object revolves around the story of Quenser a talented engineer who studies Objects – large Powered Suits that revolutionized the face of war completely.

The light novels span for seventeen volumes in the main story volumes. The light novel series has been adapted into an anime series, which was animated by J.C. Staff and aired between October 2015 through March 2016. The series also adapted into several manga series which began serialization in Dengeki Maoh.

It has been featured in the Toaru Majutsu no Index light novels as they share the same author and publisher.


In the world of Heavy Object, the United Nations has collapsed. The world is divided into four powers – Legitimacy Kingdom (the main characters belongs here), Information Alliance, Capitalist Corporations, and Faith Organization. Following the development of Objects, armored fighting machines possessing vastly superior capabilities to conventional units and weapons, war has developed into a bloodless game determined by battles between Objects.

In a military base located on the frigid regions of Alaska, a mechanic-in-training named Quenser learns the ropes of becoming an expert in the field of Objects, and meets one of its Elite pilots named Milinda. As their friendship develops, Quenser discovers that the real face of war is merely hiding behind the mask of bloodless defeat and victory....

Principal CharactersEdit

Appearances in Toaru Majutsu no IndexEdit

Shinyaku Toaru Majutsu no IndexEdit

Freshmen ArcEdit

Main article: Freshmen Arc
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A copy of Heavy Object on the table with ITEM (not pictured).

The Toaru Majutsu no Index universe has acknowledged the existence of Heavy Object as fictional media in Shinyaku Toaru Majutsu no Index Light Novel Volume 01, media which spawned a full feature movie that Hamazura Shiage and Takitsubo Rikou went to watch under Kinuhata Saiai's recommendation. Here, Quenser and Heivia appear trying to figure out how to defeat an Object.[1]

Heavy Object's light novel cover featuring Milinda the female protagonist, could be seen in the full color image that shows Shiage buying drinks for the members of ITEM, in the introductory pages of Shinyaku Toaru Majutsu no Index Light Novel Volume 01.

World Rejecter ArcEdit

Main article: World Rejecter Arc

The first volume of Heavy Object cover along with the first volume of The Unexplored Summon://Blood-Sign cover are featured in color illustration.[2]

Kamisato Rescue ArcEdit

Main article: Kamisato Rescue Arc

During the incident at the Trial shelter on December 9th, while removing the safety device from a gas canister to turn it into an improvised explosive, Touma recalled seeing a method for doing so in an old action movie which was playing on TV the previous Sunday night and had been remade recently, which he remembered as Heavy something-or-other, a reference to Heavy Object.[3]

Processor Suit ArcEdit

Main article: Processor Suit Arc

A recruitment poster in the District 7 Central Anti-Skill Station is mentioned to be a likely anime/manga collaboration, with teenage soldiers in front of a 50m colossal weapon, a reference to Heavy Object.[4]

Toaru Kagaku no AcceleratorEdit

  • The 1st volume of Heavy Object S
  • The 1st volume of Heavy Object S
  • The 3rd volume of Heavy Object S

Necromancer ArcEdit

Main article: Necromancer Arc

In the anime adaptation, Accelerator is shown reading the first and third volume of Heavy Object S, a manga adaptation of Kamachi Kazuma's Heavy Object series.[5][6][7]


  • A character with extremely similar design to Uiharu Kazari (along with the flower headband) appears from time-to-time in the manga adaptation.

See AlsoEdit

External LinksEdit


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