Arthur did not leave immediately.
With Rimuru's sovereignty secure, he put his dimensional travel plans on hold, extending his stay for a few intensely private weeks.
His massive power, usually focused on observation or analysis, was now dedicated entirely to one thing: Rimuru.
Arthur's new status as Rimuru's lover fundamentally changed the atmosphere in Tempest.
Their relationship, built on shared cosmic power and political trust, deepened quickly.
Their private moments were a blend of profound conversation and pure, effortless intimacy.
They spoke of the 'Voice of the World,' the nature of Demon Lord Seeds, and Arthur's memories of the Marvel, but always with the underlying current of their new emotional bond.
One afternoon, lying in Rimuru's custom-built quarters, Arthur explained a core component of his commitment:
"It's not just about me being with other people,"
Arthur confessed softly, tracing a line on Rimuru's arm.
"It's about my responsibility across dimensions. I'm anchored to more than one world. My commitment to you is total, but it must be inter-dimensional. You're the sovereign of this reality, and that doesn't change."
"It's a perfect relationship, then,"
Rimuru replied, leaning into his strength.
"You provide dimensional stability, and I handle the local politics. I understand your duty, Arthur."
The news of the sovereign's new lover—and the implied understanding of his "complicated" life—sent ripples through the Federation's inner circle, most notably among the Oni and the True Dragon.
Shion's protective instincts went into overdrive.
She could not comprehend how her master, Rimuru, could accept a partner who would soon leave and already had others.
Her loyalty made her hyper-vigilant, often lingering near Rimuru's office, radiating barely contained suspicion.
One day, Arthur found her waiting outside.
"Arthur-sama,"
Shion began, her tone a dangerous mix of respect and threat.
"Rimuru-sama's happiness is the only thing that matters. If your actions, or the actions of your other partners, bring any kind of sorrow or instability to my master, I will personally ensure your departure from this dimension is permanent."
Arthur simply smiled, completely unfazed.
"Shion, I'm already anchored to multiple realities. If I wanted to hurt Rimuru, I would just leave. I've spent a year stabilizing this world for her. Your threat is noted, but unnecessary. My commitment is conceptual. You should focus on keeping her tea hot and her paperwork organized."
Shion stared at the immense power he radiated, realizing the futility of her threat, but recognizing the absolute sincerity in his gaze.
She finally bowed, the last of her resentment fading.
"Understood, Arthur-sama."
Shuna was the most logical. She sought Arthur out to discuss the logistics of his relationship, treating it as a matter of diplomacy and long-term stability.
"My analysis shows that your presence provides an unparalleled Conceptual Defense for our nation,"
Shuna explained, presenting a complex chart.
"Your departure is a calculated risk. Therefore, your periodic return must be scheduled to coincide with periods of high political tension or dimensional vulnerability. Can we agree on a generalized Dimensional Visitation Schedule?"
Arthur laughed, immensely enjoying her organized approach to romance.
"You are incredible, Shuna. Yes, we can establish a pattern. When the Magicule Breeder Reactor gets a little too loud in my home dimension, I'll use it to signal my return here. That will happen when your timelines get too tense. Consider me the ultimate, dimensional 'on-call' reinforcement."
Shuna nodded, satisfied.
She now viewed Arthur not just as a lover to her sovereign, but as a crucial, scheduled variable in Tempest's long-term strategic model.
Milim was simply delighted. She pulled Arthur aside near the Labyrinth entrance.
"You're a True Dragon,"
Milim whispered, grinning from ear to ear.
"Of course you have other friends! It makes perfect sense! We have to find ways to visit your world! Does your world have stronger food? Are the battles good? Do you need a gift for your other friends? I can give them some honey!"
Milim's acceptance was instantaneous and unconditional, cutting through all the human and political complexities.
She viewed Arthur's inter-dimensional harem as just another normal True Dragon quirk, like Veldora's love for manga.
She became Arthur's chaotic, enthusiastic confidante, promising to keep an eye on things until his return.
The quiet weeks passed quickly, a unique chapter in the life of the Federation.
With his final promises made, his relationship secured, and the internal politics settled, Arthur prepared for the final, massive dimensional jump home.
He didn't need to go through the portal anymore but still needed DP though.
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