Rimuru go to Different World

Concert of Milim with her pet

Ariel sighed in frustration, her cheeks flushed with a mix of embarrassment and anger. She stood in front of a large hotel mirror, her once-dignified presence reduced to something utterly ridiculous. The former Demon King, who once ruled an entire domain with power and fear, was now dressed in a frilly bunny girl outfit, complete with fluffy ears, a bow-tie collar, and a tail. And worst of all, Milim was the reason for this humiliation.

"I swear..." Ariel grumbled under her breath, pulling at the frilly lace on her outfit. "This has gone too far."

Milim, now a famous singer and dancer known as the "Brightest Pink Star," had been dominating stages all over Earth for a decade. Her fans adored her, her concerts were packed with cheering crowds, and her influence spanned every corner of entertainment. But behind the scenes, there was one person who constantly bore the brunt of Milim's whims - Ariel, her reluctant companion-turned-pet.

"Cheer up, Ariel!" Milim chirped from across the room, a wide grin plastered on her face. She was adjusting her iconic bright pink concert outfit, which had stayed remarkably unchanged since 2024, despite it now being 2034. "You look so cute in that bunny outfit!"

Ariel's cheeks burned an even deeper shade of red, and she turned her head away, trying to hide her frustration. "I'm not here to be cute, Milim. I'm here to... well, I'm not sure what I'm doing here anymore."

She missed the days when her life had purpose - when she was the Demon King and didn't have to deal with humiliating outfits or stage performances. And though she had fought hard against Milim's dominance, the years of punishment had taken their toll. What made it even worse was that part of her - the part she hated to admit - missed Kumoko. Her old companion, the spider, had always been a source of challenge and comfort. She hadn't seen Kumoko in ages, and every time she thought about it, it left a strange, hollow feeling in her chest.

Milim, ever cheerful and oblivious, seemed to notice Ariel's quiet mood. "You're thinking about Kumoko again, aren't you?" she asked, her voice softer now, less teasing.

Ariel stiffened but didn't respond immediately. Instead, she focused on adjusting her outfit, trying to avoid eye contact. "It's none of your business, Milim," she muttered. "Just... just let me get through this stupid concert, and I'll deal with whatever comes next."

Milim smiled knowingly but didn't push the issue further. Ariel had been with her for nearly six thousand years now, subjected to a strange mix of companionship, bullying, and reluctant friendship. But despite the relentless teasing and punishment Milim inflicted, there was something between them that went beyond the surface level. It was an unspoken bond, even if Ariel would never admit it.

"Anyway," Milim said, her usual energetic tone returning, "it's showtime! We've got a packed concert tonight in Tokyo, and I need my trusty companion by my side." She gave Ariel a wink.

Ariel groaned, her head falling back in defeat. "I'm not your companion, Milim. I'm just... stuck with you."

Milim laughed and twirled in place, her pink hair flowing gracefully around her. She was still the same energetic and powerful being she had been when she first arrived on Earth all those years ago. In fact, her mastery over space-time domination had only grown stronger. What had once been raw power was now a refined, controlled force, all thanks to her ultimate skill, **Lord of Wrath - Satanal**. This had made her an even more terrifying opponent and an even more chaotic presence in Ariel's life.

But despite all the frustration, Ariel couldn't deny that Milim's space-time abilities had brought her to a level of finesse that was hard to comprehend. The events of the past years, all the bullying, humiliation, and domination, had taken place in an *imaginary space* - a place Milim had crafted with her powers to manipulate time and events as she saw fit. In reality, only moments had passed since Ariel's initial punishment for destroying Milim's stage years ago when she was searching for Kumoko. Milim had marked that point in space-time as a fixed event, and everything since then had been a part of Milim's bizarre sense of justice.

"I'm never going to live this down," Ariel muttered, pulling the bunny ears higher on her head.

Milim clapped her hands together, excitement radiating from her as the sound of cheering fans filled the air. The concert venue was packed with thousands of adoring fans, most of them teenage girls who idolized Milim's dazzling presence. The concert was about to begin, and Ariel could already hear the chanting from the audience outside. "Milim! Milim! Milim!"

The hotel they were staying at was just a short distance from the concert stage, and Milim wasted no time getting ready. Ariel, however, found herself standing in the corner of the hotel room, arms crossed and looking utterly defeated. She might have been the Demon King once, but now she was dressed as a ridiculous mascot for Milim's concert.

Suddenly, Milim turned to Ariel with a mischievous smile. "By the way, Ariel, guess what? I got you a special role tonight!"

Ariel's eyes narrowed suspiciously. "What now?"

Milim giggled. "You're going to be my backup dancer!"

Ariel's face turned pale. "You can't be serious."

"Oh, I'm completely serious!" Milim said, bouncing on her heels. "It's part of your punishment for wrecking my stage back when you first arrived on Earth. You've got to make up for that by helping me perform tonight. I've even got a special frilly dress for you!"

Ariel groaned audibly, shaking her head in disbelief. "Milim, I'm *not* a performer. I'm a warrior. A fighter. I don't dance."

"Well, you do now!" Milim winked. "Besides, it'll be fun! You can't let your fans down."

"I don't *have* fans," Ariel said through gritted teeth, though a tiny part of her worried that Milim wasn't wrong. Over the years, she had somehow gained a small following simply by being associated with Milim's concerts. It was mortifying.

Before Ariel could protest further, the concert was about to start, and Milim grabbed her by the arm, pulling her toward the stage. As they made their way through the brightly lit corridors of the concert venue, the roar of the crowd grew louder. The anticipation in the air was electric.

"You'll be great, Ariel!" Milim said, practically skipping ahead. "Just follow my lead."

Ariel, still blushing furiously, mumbled, "This is ridiculous..."

---

The stage lights beamed down on them as they stepped out onto the massive platform in Tokyo's most famous concert hall. Thousands of fans were screaming, holding up glowing pink lights that matched Milim's iconic color. Banners and posters with Milim's face covered the arena, and Ariel felt a pit form in her stomach as she realized just how large the crowd was.

Milim, ever the performer, stepped forward with confidence, her voice ringing out over the crowd. "Hello, Tokyo! Are you ready for the Brightest Pink Star?!"

The audience erupted in cheers, their voices blending into one cacophonous wave of excitement.

"And tonight," Milim continued, flashing a sly smile back at Ariel, "I have a special guest with me - my very own *trusty companion*! Everyone, give it up for Ariel!"

The spotlight shifted onto Ariel, who stood frozen in place, her heart pounding in her chest. The crowd went wild, and for a moment, Ariel was caught off guard. They were... cheering for *her*?

In her ridiculous bunny outfit, no less.

Milim winked at Ariel before turning back to the crowd. "Alright, let's make tonight a concert to remember!"

As the music started and Milim began her first song, Ariel found herself dragged into the rhythm of the performance. She stumbled through the first few steps, but Milim's boundless energy kept her moving. Despite her initial resistance, Ariel couldn't deny that there was something captivating about the performance, something almost... fun.

Still, as she awkwardly danced alongside Milim in front of thousands of screaming fans, one thought kept echoing in her mind: I can't wait to find Kumoko. She's the one who's supposed to be suffering, not me.

But for now, she had to endure being Milim's backup dancer - her role as a pet and performer etched into the pages of this bizarre chapter of her life.

The show must go on.