Light Novel Volume 13

Heavy Object: Girl's Fight at an Altitude of 10,000m (ヘヴィーオブジェクト　北欧禁猟区シンデレラストーリー) is the thirteenth volume of the Heavy Object light novel series, released on April 8, 2017.

It focuses on Sky Blue's ace pilot Mariydi Whitewitch, who has been downed in enemy territory in the Northern Restricted Zone.

Publisher's Summary
"Ice Girl 1 to all units. Fall back."

After defending her allies in the Northern Restricted Zone, the 12-year-old ace pilot Mariydi has made a crash landing. In this marshland turned into a battlefield between the clashing Four Main Powers, this lonely girl requests for assistance as she continues her mission to destroy the high precision radar systems and disable the surface-to-air missiles in the process.

"What? Waitwaitwaitwait WAIT!? Please protect me!"

On the way, she meets a military office worker from the Capitalist Corporations named Nancy. This completely useless 'busty' spectacled lady pleaded for a companion, to which Mariydi reluctantly agreed.

Then suddenly, she received an urgent message from her military-use terminal: "Mariydi Whitewitch is hereby charged with first-class war crimes and is classified as hostile."

Is this a trap, or a conspiracy?

Chapter List

 * Prelude
 * Track 01: Welcome Fallen Baby
 * Track 02: Blind Gunner
 * Track 03: Thor Hammer
 * Track 04: Money≠Treasure
 * Track 05: Sword of Catastrophe
 * Track 06: Dead to the Next
 * Track 07: Last, Lust, Lost
 * Track 08: Night City
 * Track 09: Life is Dungeon
 * Track 10: Database
 * Track 11: White Sun
 * Track 12: Signal Break
 * Track 13: End Off
 * Postscript
 * Bonus Track(D.L. Sales Only): Over the Ragnarok

Trivia

 * This is the second volume featuring Mariydi Whitewitch as the main character, after Heavy Object: Purge of Technopics.
 * This volume doesn't follow the standard chapter and naming layout of the Heavy Object series; rather than three large chapters with a two part name, it consists of many smaller chapters, designated 'Tracks' with a short name. Additionally, the contents page suggests that these are music tracks from Boy Racer's 4th best album, End Off.