Reincarnation—such a fascinating concept studied throughout generations. But dying with an unfulfilled life at the age of thirty-seven and being reborn in another world—it was almost a dream come true. To start anew, to wield powers unimaginable, to rewrite the course of fate itself—these were the promises whispered by the concept of reincarnation.

Defeating a grand evil and relishing in a life of luxury, free of any worry. That's how it was supposed to be. A hero's reward, earned through trials and sacrifices. Yet, even after living three lifetimes, he didn't get the happy ending he always wanted.

Living an ordinary earth life in his first lifetime, failing to protect his loved ones in his second lifetime, and even losing to Ivarage in the third lifetime despite having gained power in return for his other half's life. Each existence left a scar into his soul that transcended time and space. In his first life, he had been Satoru Mikami, a salaryman with unremarkable aspirations and an uneventful existence. Death had come swiftly, unexpectedly, leaving behind regrets and unspoken words.

In his second life, reborn as Rimuru Tempest, he had embraced power and purpose as a benevolent ruler in a fantastical world. Yet, even amidst victories and triumphs, the scent of loss loomed large. He had failed to protect those he cherished; the weight of responsibility heavier than any crown. The pain of watching friends and allies fall haunted him. It reminded him of his own limits.

And in his third life, the memory of Raphael's sacrifice reverberated within him—a give-and-take forged in desperation to the world itself, a gamble for strength that had ended in bitter defeat. The loss of his trusted soulmate cut deep, a wound that refused to heal despite literally crossing through time. He had stood against Ivarage, and yet the taste of failure lingered on his tongue.

Reality be damned, it freaking hurts.

What was the point of fighting a losing battle? No, that's not it.

He stood in the memory of battles fought and victories won, and he couldn't help but reflect on the twists and turns of fate. The weight of unfulfilled dreams hung heavy on his shoulders, reminding him of promises unkept and futures uncertain.

Each reincarnation had brought its own challenges, its own triumphs and losses. He had tasted power, known true companionship, and witnessed the frailty of life in its myriad forms. And yet, the elusive happiness he had yearned for remained just out of reach. In this moment of solitude, he questioned the meaning of it all. Was he doomed to repeat the cycle of life and death endlessly—only to lose and be stuck searching for a peace that seemed perpetually distant?

Reincarnation now felt like a burden he carried from one existence to the next. The luxury of a carefree life had left him, replaced by responsibilities, the struggle for purpose, and the harsh realities of a world in constant flux.

Yet, despite the turmoil and uncertainty, there were moments of clarity. Times when he glimpsed fragments of the happiness he sought—brief, ephemeral moments that became a permanent memory. It was in these moments that he found solace, a faint trace of hope that perhaps, one day, he would find the peace he so desperately craved.

And the source of those memories is forever gone.

For now, he stood at the crossroads of past and future, his gaze fixed on an uncertain horizon of two possibilities—success and failure. Reincarnation had granted him lives, each a chapter in a story always ending bitterly.

Now, standing at the door of yet another journey through time, Rimuru Tempest steeled his resolve once more. In the end, whether it leads to the happy ending he had always yearned for, things remained uncertain. The search for fulfillment had led him down paths of joy and sorrow, hope and despair. But one thing was clear—reality may have shattered his dreams time and time again, but his spirit will remain unbroken.

It was the one promise he can't ever let himself break. A promise to himself and to Raphael.

…

…

…

The cave was silent, save for the soft dripping of water from stalactites and the barely audible rustle of movement. In the darkness, a man stirred - not the simple slime that had once awakened here, but a being of beauty and power.

Rimuru Tempest opened his eyes.

The cave that had sheltered him in his solitude now reeked with the memories of three lifetimes lived and a future unfulfilled—a forsaken future. The air was thick with the scent of damp earth and the lingering essence of magic that clung to his fully developed body.

"Hey," he whispered, his voice barely a breath in the stillness. There was no response, no comforting presence in his mind. The absence was a void more heartfelt than the darkness surrounding him.

Slowly, Rimuru sat up, his newly reformed body trembling slightly. He reached out with his senses, searching for that familiar connection, but found only emptiness. A single tear slid down his cheek, glimmering faintly in the dim light.

"So, it wasn't a dream after all," he smiled and murmured, his voice thick with emotion. "You're really gone, and I'm really back." Rimuru closed his eyes, allowing himself a moment to feel the full weight of his loss by clenching his hands. He knew by then, that he's truly lost his dearest partner. And it is his moment of understanding—of acceptance—that really embodied his strength of heart.

"I feel like a cockroach for coming back alive every damn time." He said with a humorless smile. With a deep breath, Rimuru pushed himself to his feet. He looked down at his hands, marveling at the familiar yet strange form he now possessed. This body, evolved and changed by Raphael's own sacrifice a lifetime ago.

"A second chance," he said softly, flexing his fingers. "To make things right." As he spoke, Rimuru felt a bittersweet ache in his heart. Yet, as he stood there in the cave where his journey had begun - twice now - Rimuru relished the opportunity few could even imagine.

To squander it would be to dishonor everything Raphael had sacrificed.

"I won't let you down," Rimuru promised, his voice growing stronger. "This time, I'll be someone you always believed I could be."

With purposeful steps, Rimuru began to move towards the cave's exit. Each movement was a mixture of muscle memory and new awareness, his enhanced body—the body and mind of a Manas—responding to the will that had lived through countless battles and hardships.

As he walked towards where he will meet his fated dragon, he turned back, gazing into the darkness where he had first awakened in this world. For a moment, he allowed himself to remember - the confusion, the excitement, the simple joy of new beginnings. How different things were now, how heavy the burden of knowledge and loss.

With a final sentimental glance, "Well then," he said, a hint of his old enthusiasm creeping into his voice as he smiled, "let's begin again, shall we? This time, we'll get it right."

And with that, Rimuru Tempest walks into the domain of a true dragon. In his mind are the echoes of a lost future and the hope for a better one. From a human, to a slime, a leader, to a king, a teacher, a demon lord… to a manas—Rimuru's story was about to unfold once more. He will do everything to write a different ending.