With Clayman eliminated and Rimuru's seat as a True Demon Lord secured, the Federation was finally safe.
The time for war and politics was over—for now.
Demon Lord Milim Nava, thrilled by the chaos of Walpurgis and Rimuru's successful ascension, declared that the newly completed capital of Tempest needed a proper, extended celebration and "bestie sleepover."
The party was chaotic, high-energy, and completely antithetical to Arthur's strategic nature, yet he was forced to manage it.
The celebrations were in full swing. Milim was tearing through the central square, demonstrating her "Destroy Mode" on a massive, magically reinforced target dummy, while Rimuru watched and laughed.
Arthur was attempting to mediate a heated debate between Shuna and Shion about who made the superior celebratory dessert.
Suddenly, a massive, booming voice resonated from deep within Rimuru's spiritual core, heard only by the highest-level beings present:
Veldora (Internal, Booming):
"H-HEY! WHAT IS THE MEANING OF THIS?! THERE'S FOOD AND FESTIVITIES GOING ON OUT THERE, AND I AM STILL STUCK IN THIS PRISON! RIMURU! YOU GOT YOUR EVOLUTION AND FORGOT ABOUT ME! AND ARTHUR! YOU'RE THE WISE ONE! DID YOU FORGET THE ENTIRE REASON I ENTERED HER STOMACH IN THE FIRST PLACE?!"
Rimuru froze, her face (in her beautiful female form) turning a shade of mortified blue.
She and Arthur had been so consumed by the Orc Disaster, the Farmus invasion, and the Demon Lord politics that they had completely neglected the final, most important step of the original plan.
Arthur slapped his forehead with a groan.
"By the Tower, I did! I got so focused on the Magicule Breeder Reactor and optimizing your political path, Rimuru, that releasing the Storm Dragon Veldora completely slipped my mind!"
Milim, sensing the internal drama, immediately stopped destroying the dummy.
"What? Veldora? You mean my Uncle Veldora is here? Did you keep him locked up, Rimuru-bestie?!"
The situation was instantly clarified. Rimuru, embarrassed and flustered, quickly agreed to release the ancient Dragon using the newly evolved Ultimate Skill: Raphael.
The subsequent magical release was enormous, sending a pillar of light and wind into the sky as the magnificent Storm Dragon Veldora was finally reborn into the world, now as a handsome, towering human male with a chaotic laugh, ready to join the party.
Veldora's return added a powerful, chaotic energy to the group, which already contained the unpredictable Milim.
Arthur, the ultimate voice of reason, found his management duties exponentially harder.
Veldora immediately sensed Arthur's immense power and his True Dragon aura.
He treated Arthur with a deep, competitive respect, seeing him as a rival in strength and a source of entertaining conversation.
Veldora was obsessed with getting Arthur to spar with him and discuss the Magicule Breeder Reactor—a power Veldora viewed as the ultimate form of magical "fun."
Rimuru was deeply apologetic for their shared oversight, which Arthur quickly dismissed.
Their relationship remained the pillar of the Federation, now tempered by a shared, hilarious mistake.
They spent hours together, discussing Veldora's proper integration into the capital and his new role as the nation's symbolic protector.
The arrival of a third powerful Dragon/Dragonoid figure—a potential rival for Arthur's attention and a source of strength—sent the Oni into a frenzy.
Shion focused on Veldora, challenging him to feats of strength and trying to learn a new, more effective fighting style that might impress Arthur.
Shuna became obsessed with finding a rare, complex magical item to give Arthur, viewing it as the only way to prove her worth over both the powerful Shion and the newly arrived Veldora. She often cornered Arthur, asking for detailed design critiques, which he indulged to keep her happy.
Milim was ecstatic, splitting her time between spoiling her Uncle Veldora and dragging Rimuru and Arthur into spontaneous, high-speed adventures or competitive eating contests, solidifying the new, chaotic
"Demon Lord Family"
That now guarded the Federation.
The chaos reigned, but the Federation was safe, strong, and deeply, personally bonded.