(Note: this was written at least 8 months ago)
Part of Legacy of Prometheus Universe. Exclusive to US' Independence Day.
This short story expands the role of Testare's repurposed superweapon, Meliodas Repurposed after the end of Decades' Civil War.

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With the Decades' Civil War put to an end, the rebuilding could proceed unimpeded.
The new borders between Amelia and Testare were mended. The dead was properly buried and returned to their own homeland.
Meanwhile, Tommy's son, Tamayil and one of his retainers had an conversation inside the Kejsarens' Library.
- Disruptor Cannon... What's it, sir?
- Haven't figured it out yet. Its blueprint filled with too much abstract.
So that's why, they sent us their own schematics for their own command barge. And wait... what were these mysterious materials for?
- According to their message, sir... They're from a prototype that intentionally got abandoned, with that so-called Cassandra blowing up what remains of it into the smitheerens.
- Which can only mean one thing - they must have completed the superweapon and waited for us. There's no way for us to counter it apart from our brethren in Amelia. Oh, and defectors from the Empire as well, if they managed to bring anything substantial.
- Don't lose all your hope yet. Look at what we have: everything we need.
- So... you mean we can improve upon the Empire's work by scratch.
- Yes, and that's exactly I'll do. Scavenge these wreckages for anything useful. We'll start constructing the new airship in these weeks.
***
And so, comes the new superweapon - named after Melo'dia, created with Testare engineering, Empire materials and schematics.
Meliodas Repurposed.
Sanguin'are, the leader of Forvisat's splinter group comes to test its capabilities.
- And how's it supposed to work against the Empire's sophisicated defenses?
- You have probably heard of these few Empire sharpshooters that holds up that Dictator's forces at bay. Perhaps not many will withstand its wrath.
- I can explain its ingeunity for all day, but that's a story for another time...