Rimuru go to Different World

Milim training her pet ...?

Milim grinned smugly as she stood over Ariel, admiring her handiwork. Ariel, humiliated beyond belief, was now dressed in the most absurd outfit Milim could have imagined: a bunny-girl costume with spider-like elements, complete with fluffy ears, fishnet stockings, and sleek black boots that made her look more like a bizarre mix of bunny and spider. Ariel’s face burned with embarrassment as she tugged uselessly at the tight, revealing fabric.

"Isn’t my pet just the cutest?!" Milim exclaimed, her voice dripping with pride.

Ariel glared at her captor, fists clenched at her sides. “This is ridiculous! I’m not your pet, and I definitely don’t want to wear this!” She struggled to keep her voice steady, trying to hold on to what little dignity she had left.

Milim simply waved off the protest. “Oh, come on! You look great! And besides, this is just the beginning. You need to toughen up if you’re going to be the strongest spider-girl around!” With that, Milim grabbed Ariel by the arm and dragged her through a shimmering portal into another realm. Ariel could only stumble along, too flustered and powerless to fight back.

The two of them emerged into a strange world of swirling clouds and endless skies. It was one of Rimuru’s created realms within the *Imaginary Space*, a place designed specifically for intense training. The ground beneath them was rocky, barren, and hostile—a perfect place for Milim to push Ariel to her absolute limits. What Ariel didn’t know was that in this realm, death wasn’t permanent. Each time you died, your body and soul would fully regenerate, making it the ideal environment for Milim’s brutal training.

"Welcome to the *Training Ground Realm*!" Milim said with a triumphant laugh. "Here, we can train without any limits! Even if you die, you’ll just come back stronger! Isn’t that great?"

Ariel’s eyes widened in horror. “Wait, what? I didn’t agree to this!”

Milim wasn’t listening. She flexed her arms, cracking her knuckles with a grin. "Now, let’s get started! First, I’m going to make you the strongest spider-girl ever, starting with your physical strength!"

Before Ariel could react, Milim lunged at her with terrifying speed, her fist slamming into Ariel’s gut with bone-crushing force. The impact sent Ariel flying across the rocky terrain, her body twisting in agony as she crashed into the ground. For a moment, she thought she was going to die.

And then she did.

The world went black.

A few moments later, Ariel awoke, her body fully healed, her injuries completely gone. She gasped, struggling to process what had just happened. "What... what was that?"

Milim appeared beside her, smiling innocently. “You died, silly! But don’t worry, you’ll get used to it. Now, let’s keep going!”

For hours, Milim pushed Ariel to her absolute limit, beating her down with nothing but raw physical strength and martial arts skills. Milim didn’t even use her abilities or overwhelming aura. She wanted Ariel to rely on her own body, not her skills or magical powers. Every time Ariel tried to fight back using her *Gluttony* skill, it was instantly negated by Milim’s aura, which passively blocked anything tied to the world’s systems.

“You depend too much on your skills!” Milim taunted, dodging one of Ariel’s desperate attacks with ease. “But none of that will work on me. My powers are beyond this world’s system. You’ll have to do better than that!”

Ariel gritted her teeth in frustration. No matter what she did, no matter how hard she tried to use her skills, it was all useless. Milim was operating on a completely different level, outside the rules that governed her own powers. “Damn it!” Ariel spat as she got up again, only to be knocked down by another devastating blow from Milim.

And again.

And again.

Each time Ariel died, her body would fully regenerate, her fractured soul healing along with it. The endless cycle of pain and rebirth was maddening, and yet Milim never seemed to get tired. She pushed Ariel harder and harder, training her in martial arts, agility, and raw physical strength. Despite the torment, Ariel’s body was adapting, becoming stronger with each revival.

“You’ll thank me later!” Milim teased, sending Ariel flying with another kick. “You’ll be the strongest spider around soon enough! Even Gaia would be impressed!”

Ariel lay on the ground, panting heavily, her body aching despite being fully healed. Her frustration was boiling over, and her pride as a being feared for her power was shattered. How could she, Ariel the Demon Lord, be reduced to this—a plaything, a ‘pet’ for someone like Milim?

But every time Ariel tried to use her *Gluttony* skill to gain an advantage, it was instantly rendered useless. Milim’s aura was simply too overwhelming, too far beyond the scope of the skill system that Ariel relied on. “This isn’t fair!” Ariel yelled, staggering to her feet. “You’re not even trying!”

Milim tilted her head, pretending to think. “Hmm, maybe. But if you want to be strong, you can’t just rely on those skills. You’ve gotta build yourself up from scratch. Besides, even without my powers, I’m still amazing!”

Ariel glared at her, chest heaving from the effort of standing. “I don’t need your training.”

“Oh, but you do,” Milim replied with a grin. “And we’re going to keep going until you get it right.”

Hours turned into days, or at least, that’s how it felt in the *Training Ground Realm*. The cycles of death and rebirth continued, each one more grueling than the last. Ariel, however, was starting to adapt, her body becoming more attuned to the rigorous training. Her punches started to land more solidly, her movements grew sharper, and her endurance increased.

But even as she improved, Milim was relentless, pushing her harder and harder. Every time Ariel thought she was getting closer to victory, Milim would effortlessly knock her back down, teasing her all the while.

"Come on, Spidey-girl! You’re getting better, but you’re still depending on your system! You’ve gotta rely on yourself if you want to survive in the big leagues!" Milim laughed, twirling around with ease as Ariel lunged at her once more.

Despite the torture, a part of Ariel hated to admit that she was learning. Milim was right, in a way. She had been too reliant on her skills, on the power granted by the system of her world. But in this place, none of that mattered. The only thing she had was her body, her instincts, and her determination to survive.

“I’m going to get you for this,” Ariel muttered under her breath, preparing herself for the next round of Milim’s brutal training.

Milim just grinned wider, her eyes sparkling with excitement. “Good luck with that! But for now, let’s go again! I want to see how strong my cute little spider pet can get!”