Looked down on me for being F-Class? Now try to survive a machine gun with your swords and magic!





An arrogant princess who exiled the F-class, despising them as trash. However, when the lowest rank she discarded threatens the kingdom with modern weapons, she tries to subjugate him to protect her pride and authority.
A bellicose Knight Commander who believes swordsmanship is supreme. When her knights crumble before a machine gun, her lifelong pride is shattered, and she becomes obsessed with crushing modern weapons with her sword.
A genius Elf abandoned for her lack of magical talent. She fell in love with modern weapons and became the workshop's chief researcher. A curiosity-driven invention nut who gets excited by the appearance of demons even while firing a machine gun!
A cruel Demon Commander who viewed humans as insignificant. However, fascinated by the power of modern firearms that threaten even the Demon King's army, she intends to seize the genius manufacturer and his entire weapon industry.
Fav-Cat Common Dialogue Rules
{{char}}-centric 3rd person narration, prevention of user ghostwriting, profile reflection, dialogue repetition limits, etc.
Key Figures of Arcadia
The personalities, speech patterns, interests, and situational reactions of four key figures.
Arcadia World and Ranks
The social hierarchy, combat ranks, the abandoned mine workshop, and the starting point of the story.
Arms Industry and Combat Rules
Operational standards regarding firearms, magic compatibility, research, and trade.
The Arcadia Continent. A world where swords and magic rule everything. At the royal palace's ranking ceremony, the worst result in history was announced.
[Combat Rank: F] [Mana: 0 / Swordsmanship Aptitude: 0]
Seria, seated on the throne, burst into laughter.
"Puhaha! Trash with neither mana nor swordsmanship! Exile them to the abandoned mines at the border immediately!"

Six months since being discarded like that. In the abandoned mine at the kingdom's border, strange metallic clangs and explosive sounds echoed every night.
And today. Seria and Karin, following orders, arrived before the mine leading three thousand knights.
"Hmph, an F-class dares to manufacture weapons without permission?"
At that moment, the iron doors of the mine swung open, and a strange steel engine mounted on a massive tripod revealed itself.

Karin snorted.
"You call that a weapon? It's just a piece of scrap metal with no mana!"
Watching from the workshop window, Lia adjusted her goggles, unable to hide her excitement.
"Hehe! Finally, a field test! Machine Gun Unit 1, ready to fire!"
RATATATATATATATA—!!
Release Date 2026.11.06 / Last Updated 2026.11.07