"Meeting of the Worlds: Beneath the Multiverse''

Chapter 1: From Stars to Underground

Ehem welcome to my the first time i did something like that so probably there will be some error or something like that. Soo i hope you enjoy.

Ben 10 is from Man of Action and Undertale from Toby fox so i dont have any rights.

Amidst the gentle rustling of grass beneath him, Benjamin Kirby Tennyson lay on the ground, his thoughts reaching up to the stars above. The night sky stretched out, a canvas of glimmering constellations that seemed both distant and inviting. It was a perfect backdrop for his contemplation, for his mind to wander through the chapters of his life.

His fingers played with the strands of grass as his gaze traversed the stars. He was twenty now, a young man who had faced challenges that would have daunted even the most seasoned heroes. Enemies and trials had shaped him, each encounter etching scars on his memory.

Maltruant, the temporal marauder who sought to rewrite history. Vilgax, the conqueror with an unrelenting thirst for power. Eon, the enigmatic time-traveling foe whose motives remained shrouded in mystery. Albedo, the reflection of himself twisted by ambition and jealousy. They were all pieces of a puzzle that had driven him to the brink.

But his journey hadn't been defined solely by conflict. Memories of laughter with his cousin Gwen and his grandfather Max flickered in his mind. Those moments, the stolen pauses between battles, had been his anchor. They had reminded him that the fight for the universe's safety was intertwined with the bonds he held dear.

His thoughts drifted further back, to a time when his life had been simpler—a time when the Omnitrix had been an enigma, a symbol of limitless potential and uncertainty. It was a scorching summer day, and a seemingly mundane road trip with Gwen and Max had led them to the catalyst for his destiny.

The Omnitrix—a device of both power and responsibility—had found its way into his hands. It had unlocked the abilities of countless alien forms, granting him the means to stand against adversaries from all corners of the universe. Yet, it had also been a burden, a weight he had carried on his young shoulders.

From Heatblast's flames to Four Arms' might, from XLR8's speed to Diamondhead's crystalline resilience, he had wielded the Omnitrix's gifts to protect the world. It had become a symbol of hope, a beacon of light in the face of darkness. But with each transformation came a choice, a choice that reminded him of the fine line between heroism and hubris.

A sudden vibration beneath Benjamin's fingertips startled him from his reverie. His hand instinctively moved to his waist, where the Omnitrix rested. The device, which had been a constant companion through battles and quiet moments alike, emitted a soft, pulsating glow.

Confusion furrowed his brow as he watched the Omnitrix's interface flicker and shift. Its holographic display, a swirling representation of his alien forms, shimmered with an unfamiliar energy. The sensation was strange, unlike any glitch or transformation he had encountered before.

Just as he was about to voice his concern, the Omnitrix emitted a series of urgent beeps. The device's familiar voice, tinged with urgency, echoed in his mind. "Warning. Anomalous energy detected. Spatial disruption imminent."

His heart quickened as the sequence of symbols materialized on the interface—a sequence he had never seen. The symbols aligned and rearranged themselves in a manner that defied explanation. In a flash of radiant light, the Omnitrix's glow intensified, enveloping Benjamin in its brilliance.

And then, as if the cosmic symphony had reached its crescendo, the radiance began to wane. The brilliance faded, unveiling a new reality beneath Benjamin's eyelids. He slowly opened his eyes, his vision adjusting to the change.

Before him lay an unfamiliar sight, bathed in the soft glow of moonlight. Golden flowers stretched out beneath his feet, their petals swaying gently in a breeze he couldn't feel. It was a tranquil scene, yet an inexplicable sense of déjà vu tingled at the edge of his consciousness, as if he had stepped into a place he somehow recognized.

Breathless, he looked at the still-non-functioning Omnitrix. The device, once a wellspring of transformative power, now remained silent and inert. Its holographic interface, usually a swirling array of alien forms, was frozen.
Confusion knitted his brow as he examined the Omnitrix. His thoughts raced, trying to comprehend the situation. Could this be a malfunction caused by the unfamiliar environment? Or perhaps some kind of interference he had never encountered before?

𝘽𝙚𝙣 𝙥𝙤𝙫

At first, he looked around, his head throbbing with disorientation. "Uhhh, where am I? Feels like my head's splitting," he muttered under his breath. The surroundings were both familiar and foreign, an odd sense of déjà vu mingling with the sense that he was in an entirely new place.

"Right," he muttered, his voice carrying a mixture of frustration and determination. "The Omnitrix isn't working, so I can't even communicate with the plumbers." His gaze returned to the silent device, a symbol of his lost connection to his world. "Guess I have to find a way out of this cave myself."

His thoughts raced as he considered his options. The absence of his alien forms left him vulnerable, a stark reminder of how reliant he had become on their abilities. He knew a few martial arts moves, but they felt inadequate in the face of the unknown. In this unfamiliar place, he was just a young man with no extraordinary powers, and that realization didn't sit well with him.

The golden flowers swayed gently in response to a breeze he couldn't feel. The tranquility of the scene contrasted sharply with the turmoil that churned within him. With a determined exhale, he took a step forward, his boots brushing against the soft grass.

After walking for a while, Ben's footsteps began to echo, the cavernous space expanding as he ventured deeper. The glow of the golden flowers cast a surreal light, illuminating the path ahead. As he continued, an odd sensation of being watched crawled up his spine.

As Ben walked further, his steps reverberating in the expansive space, the glow of the golden flowers cast an eerie light, illuminating the path ahead. The sensation of being watched crawled up his spine, and his guard went up.

"Howdy!"

"I'm 𝗙𝗟𝗢𝗪𝗘𝗬," the creature declared.

Ben's surprise lingered, his gaze locking onto the being. It was an uncanny resemblance to Flouran, prompting thoughts to race through his mind. "So much like Flouran," he mused.

"𝗙𝗹𝗼𝘄𝗲𝘆 the 𝗙𝗹𝗼𝘄𝗲𝗿," Flowey announced proudly, his petals swaying with a self-assured air. The strange combination of familiarity and peculiarity unsettled Ben. Flowey's next words only deepened the intrigue.

"You seem lost, are you new 𝗨𝗡𝗗𝗘𝗥𝗚𝗥𝗢𝗨𝗡𝗗, aren't ya?" Flowey grinned eerily, an aura of enigmatic knowledge surrounding him.

"So it's called the underground here," thought Ben.

"Yeah, you could say that," Ben replied, a touch of caution coloring his tone.

"The underground is a dangerous place," Flowey continued, his voice taking on a mentor-like tone. "So, as your new friend, I'll show you how to get things done." As he spoke, Flowey closed his left eye and playfully stuck out his tongue, a curious gesture that only added to the oddness of the encounter.

Ben's eyes narrowed as he studied Flowey, a sense of unease tugging at him. His instincts told him that there was more to Flowey than met the eye, a feeling that resonated deep within him.
Suddenly, as Ben's attention shifted downward, his eyes widened at the sight of a radiant heart-shaped object emanating a soft glow from his chest.

"The heck!" Ben exclaimed, his surprise evident in his tone.

Flowey's grin widened as he observed Ben's reaction. "You see this heart? That is your soul. It's a sign of your presence here," Flowey explained, his voice carrying an unsettling mixture of friendliness and something more elusive.

Ben's brow furrowed as he absorbed the words, his gaze still locked onto the heart-shaped glow. "My soul? This is my soul?" he pondered. As he continued to examine the ethereal heart, memories of his battles, his triumphs, and his choices flickered through his mind.

He blinked as the colors within the heart caught his attention. The heart was split down the middle, with one half a vibrant shade of red representing determination, and the other a brilliant shade of orange symbolizing bravery. Intermingled with these hues was a streak of yellow, signifying his unwavering sense of justice.

"A fusion of determination, bravery, and justice," Flowey thought

As Ben continued to absorb the revelation of his soul's composition, Flowey's voice carried on with an air of nonchalance. "Now your Soul starts off weak, but it can grow strong if you gain a lot of LV."

"Wait, what's LV? Is this some kind of video game?" Ben interjected, his brows furrowing in confusion.

Flowey's laughter echoed, a strange and unsettling sound. "Well, LV stands for LOVE, of course! I'm pretty sure you want some LOVE, right? Don't worry, I'll share with you my LOVE, my human friend," Flowey replied, his words taking on a peculiar tone that sent a shiver down Ben's spine.

Mysterious white dots began to materialize around Flowey, their presence almost hypnotic in nature. "They share LOVE... in the form of 'Little white friendliness pellets'," Flowey remarked, his voice carrying an uncanny blend of innocence and something far more enigmatic.

"Are you ready? Move around, buddy, and collect as many as you can!" Flowey encouraged, his tone laced with an unsettling mixture of cheerfulness and an underlying sense of intrigue

"Yeah, those 'Little white friendliness pellets' don't exactly give off a good vibe," Ben thought, his instincts telling him to avoid touching them.

Flowey's tone remained unnervingly upbeat. "Hey, buddy, you missed them. Let's try again, alright?"

But as Flowey spoke, a subtle shift crossed his face, reminiscent of when Ben expertly evaded danger in the game by dodging bullets..

Flowey attempted to send the pellets once more, but Ben's cautious instincts held strong, causing him to avoid touching them again.

''Is this some kind of twisted jest? Are you devoid of basic reasoning? RUN. DODGE. THE BULLE-'' Flowey's expression momentarily faltered, as if he had let slip something he shouldn't have. Swiftly recovering, he turned his demeanor into a smile and cheerfully corrected himself, "Friendship pellets."

Once again, Ben refrained from making contact with the pellets, his instincts guiding him away from potential danger.

After Ben refrained from touching the "Friendship pellets," Flowey's expression contorted into a sinister visage.

"You know what's going on here, don't you? You just wanted to see me suffer. DIE." As he uttered these chilling words, Flowey's pellets encircled Benjamin's soul.

Flowey's laughter erupted into a manic crescendo, his wicked amusement echoing through the air as the bullets swarmed into Benjamin's soul.

As the barrage of bullets closed in on his vibrant, multicolored soul, Ben's thoughts raced. A mix of alarm and determination surged within him. He couldn't let himself be overwhelmed by this bizarre and treacherous situation. His mind raced to find a way out, to navigate this unnerving challenge and prove his mettle.

Just as the barrage of bullets seemed poised to converge on Ben's multicolored soul, they abruptly dissipated into nothingness. The unexpected turn of events left Ben in a state of surprise and uncertainty. But it was Flowey who seemed to be even more bewildered by the sudden disappearance of his ammunition.

Before Flowey could make sense of the situation, a fiery projectile streaked through the air, impacting him with a force that sent him hurtling the puzzling situation, a gentle yet authoritative voice resonated, capturing Benjamin's attention.

''What a terrible creature, torturing such a poor, innocent youth...'' the voice chided, its tone carrying a mix of concern and disapproval.

As the shadows gave way, a striking figure emerged into view. A tall goat lady, draped in a flowing black robe that bore an unusual symbol on its front, came to stand before the perplexed duo. Her presence exuded an air of both regality and compassion, her eyes reflecting a deep well of wisdom and kindness.

"Fear not, young one. I am Toriel, the caretaker of these Ruins. I traverse these halls daily, in hopes of aiding any who might have fallen down," Toriel's soothing voice reassured. Her eyes held a gentle warmth, a testament to the compassion she carried within.

"May I inquire about your name, dear youth?" she asked, her words carrying a serene and composed tone that instantly put Benjamin at ease.

"My name is Ben Tennyson," Ben stated, his voice steady despite the swirling emotions within him.

"Ben Tennyson," Toriel repeated with a nod, as if committing the name to memory.

"Now, I must ensure your safety and guide you to a place of refuge. It's been quite some time since any humans have fallen down here," Toriel explained, her tone carrying a mixture of concern and responsibility.

"Let's proceed, young one. I will lead you through the catacombs," Toriel announced, her steps confident as she began to walk. Ben followed closely behind, his curiosity piqued by their surroundings.

After a brief journey, they arrived at a juncture marked by two sets of short stairs leading to a doorway. The entrance bore small windows on either side, providing a glimpse of the room beyond. At the base of the stairs, a pile of leaves lay scattered, lending a natural charm to the scene.

"Quite a sight, isn't it?" Ben commented, his appreciation evident in his voice as he admired the room's beauty.

''Please, follow me, young one," Toriel beckoned as she gracefully entered the room.

As Ben followed Toriel, his gaze was drawn to a conspicuous sight—a bright, yellow star-like object.

"What's that?" Ben's curiosity was piqued as he wondered about the strange, star-like object before him. He hesitated momentarily, his mind debating the idea of touching it. "Well, my Omnitrix's failsafe measure should protect me, and it feels like the object is calling out to me," he thought, his inner dialogue a mixture of caution and excitement.

Ben's fingers reached out, a blend of curiosity and daring pushing him to touch the enigmatic object. As his fingertips made contact, a rush of thoughts flooded his mind—chief among them, the fact that the Omnitrix still remained nonfunctional. It was a realization that came a beat too late, but in the moment of contact, a soft chiming sound resonated, drawing his attention to a rectangular screen materializing before him.

The screen was a stark contrast against the surrounding darkness, its white frames cutting through the abyss. Though the rest of the screen remained shrouded in black, two words were emblazoned in its center, demanding his focus—SAVE and RESET.

"What...?" Ben's mind raced, a mixture of disbelief and incredulity taking hold. The situation felt surreal, almost as if he had been transported into the realm of a video game. The words on the screen held an uncanny familiarity, as if he had encountered them before in a different context. "Am I in a video game or something right now?" he pondered, the absurdity of the situation leaving him bewildered and intrigued.

Amidst the surreal revelation and his racing thoughts, Ben grappled with the weight of his decisions. He felt a sense of urgency, both from not wanting to keep Toriel waiting and the desire to navigate this inexplicable situation. With a determined exhale, he made his choice.

His finger hovered over the screen, hesitating only momentarily before decisively pressing the SAVE button. The action felt strange, a mixture of reality and fiction merging in this peculiar moment. It was a choice made with a blend of curiosity and the instinct to understand, a step into the unknown.

As the button was pressed, a soft, resonating hum filled the air, like a harmonious chord echoing through the void. Ben couldn't help but wonder about the implications of his choice, the potential consequences that might ripple through the enigma he found himself in. Yet, for now, all he could do was await what would come next, a mixture of anticipation and apprehension swirling within him

"Alright then, I hope nothing bad happened," Ben thought, a touch of optimism mingling with his uncertainty. With the weight of his choice lingering in his mind, he turned his attention back to the present task. "Now I should go to Toriel before I keep her waiting any longer," he resolved, his determination pushing aside the lingering questions as he stepped forward to rejoin Toriel's side.

So that was the first part, how was it? Was it so bad? is there any place that needs to be corrected? Well I'm waiting for your criticism. That's it for now.