What Should Have Been a Pure Blue Ocean >> Unofficial Battle in the Loyauté District is the first chapter of Heavy Object: Theoretical Vein.
- The 37th participates in a suppression of the armed group Hyena in the Loyauté District.
- Quenser and Heivia are abducted and asked for help by locals and armed group who are being affected by the actions of the Capitalist Object Charbetty. They infiltrate the maintenance base in order to sabotage the Object.
- Quenser and Heivia cross paths with Valkyrie.
- Anime: N/A
- Manga: N/A
|Volume 3, Epilogue||Volume 4, Chapter 1||Volume 4, Chapter 2|