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  ....

  Seeing the dazzling dispy of lightning teiques in the sky, the se was utterly breathtaking and awe-inspiring. Everyone was stunned into silence.

  "Kyoya, you're really making me feel ie," Akeno said, a hint of self-deprecation in her voice as she returo my side.

  "Now, now, Akeno, don't pare yourself to me. You'll only end up feeling worse." I chuckled, then added, "When you train ter, you try to emute the teiques I demonstrated, or you develop your own. If you have any questions, feel free to ask me."

  "As for Kiyome, I'll expin your training regimen ter. For now, could y Rias back? It's time to activate 'cheat mode'." I said, gesturing for Akeno to fetch Rias.

  ...

  When Rias and Akeurned, everyone looked at me with a mixture of fusion and anticipation, w what this "cheat" was all about.

  I smiled mysteriously, then took out a miniature model of a house.

  '???'

  Everyoared at the tiny house in my hand, pletely bewildered.

  Akeno was the first to speak, her expression slightly strained. "Kyoya, is this the 'cheat' you were talking about? Since when did you start liking such childish things?"

  Seeing their fused expressions, I grinned and said, "Hehe, don't uimate this. This little thing is extraordinary. You'll be amazed when you hear what it does!"

  "Alright, Kyoya, stop keeping us in suspense. Expin it already!" Rias said, rolling her eyes at my antics.

  "Okay, okay, I'll expin!" I said, dropping the act. "This is called the [Hyperbolic Time Chamber]. It has everything you need inside: food, water, and rooms. The air is thin, the temperature fluctuates between 122 degrees Fahre and -40 degrees Fahre, and the gravity is ten times that of Earth. It also has a vast, seemingly endless expanse, like outer space."

  "Those with weak wills or who ck focus are proo halluations. And the most peculiar thing is, one year inside is equivalent to only one day outside. He's the ultimate training location. However, a person oer for the equivalent of two days in their entire lifetime. If you exceed that limit, the exit disappears, and you're trapped forever."

  "Boom!!!"

  Hearing my expnation, everyone was stunned!

  Training inside for one day was equivalent to training for aire year outside!

  My words were like a bolt from the blue, leaving Rias and the others frozen in pce.

  Training for a year in just one day was something they had never even dared to imagine.

  "ging the flow of time—This..."

  "Kyoya-senpai, are you joking?"

  "Th-this is—It's unbelievable."

  "Kyoya, are you sure you're not just teasing us?" Rias asked, her mind reeling.

  Seeing their reas, I couldn't help but chuckle. "Did you hear me wrong? Not only this [Hyperbolic Time Chamber] simute any training enviro you desire, but it also alters the flow of time."

  "In short, you don't just have seven days to train before the Rating Game. You actually have two years and five days. How about it? With my cheat, are you fident you beat that 'turkey' now?"

  Everyone's eyes lit up, and they all showed expressions of excitement and eagerness.

  "Kyoya, let us try it out!" Rias urged, uo tain her excitement.

  ...

  I didn't drag it out any longer. I tossed the [Hyperbolic Time Chamber] into the air.

  The miniature house rapidly expanded, growing from the size of my palm to the size of a normal house, before finally stopping.

  Everyoched this transformation in awe, marveling at the sight.

  Then, we all gathered at the entrance of the [Hyperbolic Time Chamber]. I took out my phone a a timer.

  Rias and the others had just heard my brief description of the [Hyperbolic Time Chamber's] wonders but had yet to experie for themselves. So, they decided to send someone in to test it out.

  "I'll go in and take a look!" Akeno volunteered, stepping forward. Everyone else waited outside.

  "Once you're inside, don't waoo far, or you might get lost." I reminded Akeno before she entered.

  Akeno nodded, opehe door, and stepped inside. She felt as though she had entered another world. The gravity was noticeably heavier, making her feel a little unfortable.

  The spaside seemed to stret forever, a vast, white emptiness with no end in sight. It made Akeno feel incredibly small.

  Remembering that I had called this a training artifact, she decided to test it out. She raised her hand and aimed at a spot on the ground nearby, unleashiro attack.

  But the normally destructive lightning bst, when it struck the ground, caused no damage. The ground was pletely unharmed.

  Akeno was shocked. Her stro attack hadn't eve a scratch. But this also meant they could train without w about damaging the pce!

  ...

  Finally, after expl the space for about an hour, Akeno decided to leave.

  Outside, Rias and the others were startled to see Akeno emerge so quickly.

  "Akeno, why did you e out so soon? It hasn't even been a sed."

  Akeno expihat she had been inside for about an hour.

  Everyone was amazed by the [Hyperbolic Time Chamber].

  "It's a miracle training artifact!" Rias excimed.

  "Not only that, but the gravity inside is almost ten times that of the outside world. And the spaside is practically limitless. Even my stro attack didn't leave a mark on the ground. It's a natural training ground!" Akeno added.

  ????

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