The Real Reason Diablo Chose Rimuru as His Master: A Shocking Mystery

 

In the world of That Time I Got Reincarnated as a Slime, Rimuru Tempest's rise to power has captivated audiences. Among the many intriguing characters in the series, one stands out as particularly enigmatic—Diablo, Rimuru's most powerful and loyal general. With a backstory that spans eons and a personality as complex as his abilities, Diablo’s loyalty to Rimuru has puzzled many. But what is the real reason Diablo chose Rimuru as his master? Let’s dive into the shocking mystery of Diablo’s allegiance.

Diablo: The Primordial Demon with a Unique Origin

Diablo, also known as Noir, is no ordinary demon. Born over 20 billion years ago, he is one of the primordial beings created at the dawn of existence. Unlike his siblings, who were caught up in constant battles, Diablo grew disillusioned with the endless cycle of fighting. After a single battle with the primordial red, Diablo realized that growing stronger would only lead to greater boredom. He decided to avoid evolving and rejected any ultimate skills for a long time—until a certain slime came into the picture.

The Slime That Stole Diablo's Attention

Two years before meeting Rimuru, Diablo discovered a slime performing some strange activities in the Jura Forest, like absorbing energy from its surroundings. Curious but cautious, Diablo refrained from approaching the slime directly—after all, he didn’t want Rimuru to think he was a stalker. Instead, Diablo waited to be summoned, which eventually happened when he was called by Rimuru.

At first, Diablo was intrigued by Rimuru's possession of a mysterious mask, but as he observed Rimuru more closely, he realized that this slime was far more unique than he had imagined. Rimuru was different from anything Diablo had encountered in his long existence. Diablo’s jealousy flared when he saw Beretta, a demon from his own family, summoned by Rimuru, prompting him to try and kill her. However, after discovering that Beretta was created by Rimuru himself, Diablo decided to spare her—demonstrating his deepening admiration for his master.

Rimuru's Unconventional Leadership

What fascinated Diablo even further was Rimuru's approach to leadership and nation-building. Unlike other leaders in Tensura, Rimuru ruled with the philosophy of inclusion, not exclusion. Tempest, his monster nation, welcomed beings from all walks of life, including demons, without prejudice. This is quite unlike other factions in the world, where exclusion is the norm.

Rimuru doesn’t seek power for its own sake. Instead, he creates and builds for personal fulfillment and entertainment. Whether it’s developing a method to make ramen or figuring out how to create white rice, Rimuru’s goals are not centered on military strength. Yet, paradoxically, he has created the strongest nation in the world without pursuing traditional power-building methods. Diablo, too, shares this philosophy—though he is one of the strongest demons, he never actively seeks to grow stronger. This mutual disregard for traditional power-seeking is one of the key reasons Diablo was drawn to Rimuru.

The Strength of Rimuru's Soul

Another reason Diablo is so intrigued by Rimuru is the immense strength of his soul. In Tensura, a being's power is heavily influenced by the strength of their soul. Rimuru, despite being a simple slime, possesses an extraordinarily gifted soul, something that is evident even after his humble beginnings. His soul grew even stronger after being named by Veldora, the True Dragon. Rimuru's soul is powerful enough to store the Dragon Factor, an achievement that few can claim.

This remarkable strength of soul is what allows Rimuru to do the impossible, which Diablo finds even more fascinating. Some theories suggest that Rimuru might even be the incarnation of a legendary being, possibly even possessing fragments of another soul, which could explain his ability to break the rules of the world.

The Shocking Revelation of Rimuru's Power

When Diablo was first summoned and witnessed Rimuru’s Harvest Festival, he faced another shocking revelation. Diablo, being well-versed in the mechanics of magic and ultimate skills, recognized that Rimuru possessed not only Gluttony King, a skill tied to his slime form, but also Wisdom King, a unique skill that no one else should have. According to the rules of the world, one soul should only possess one ultimate skill, but Rimuru broke that rule, further cementing his unique status.

Rimuru’s path to becoming a Demon Lord was also not driven by personal ambition but by selflessness. He chose to undergo the procedure to become a Demon Lord to revive his fallen comrades, particularly Shion, proving that his actions were not for his own gain but for the greater good of his people.

Diablo’s Loyalty and Transformation

After witnessing Rimuru's selflessness and the power of his soul, Diablo’s admiration for him only grew. Even after their first battle, where Rimuru easily defeated a major threat in the form of Rosin, a powerful mage, Diablo wasn’t satisfied with just serving Rimuru. He wanted to be more. So, when Rimuru gave him a name, Diablo underwent an evolution, transforming into a Demon Peer not for his own benefit but to serve his master better.

This evolution marked a major shift in Diablo’s purpose. No longer merely a servant, he now found a deeper sense of fulfillment in helping Rimuru’s cause. Diablo quickly rose to a Lieutenant level within Tempest’s army, a key figure in Rimuru’s growing nation.

Diablo’s Influence in Tempest’s Military

Although Rimuru didn’t initially realize the full extent of Diablo’s power, it became evident as Diablo’s influence grew within Tempest. His presence alone was enough to deter potential threats, and his tactical brilliance was crucial in managing complex situations. For instance, when Tempest faced the fallout from a failed invasion by Falmouth, Diablo’s strategic mind was instrumental in turning the situation around. Not only did he help prove Rimuru’s innocence in a scandal involving the church, but he also secured an ally in Yom, turning Falmouth into a vassal state of Tempest.

Diablo’s actions were calculated and, in many ways, entertaining. Instead of relying on brute force, he followed Rimuru’s directive to minimize casualties and avoid harming innocents. This made the task more challenging and, to Diablo, more enjoyable. It’s this symbiotic relationship between Rimuru and Diablo—where Rimuru creates fun, and Diablo ensures the nation’s success—that forms the backbone of their powerful partnership.

Conclusion: The Unbreakable Bond

In conclusion, Diablo’s decision to serve Rimuru goes beyond mere loyalty. It’s rooted in admiration for Rimuru’s unique approach to leadership, his powerful soul, and his selflessness. Rimuru is not just a master; he’s a being who challenges the very foundations of the world, which is why Diablo is so deeply drawn to him. Their partnership is one of mutual benefit, where Diablo’s immense power serves Rimuru’s vision, while Rimuru provides Diablo with a purpose that transcends simple conquest.

As the story of Tensura continues to unfold, Diablo’s role as Rimuru’s most trusted general will undoubtedly continue to be a key element in Tempest’s rise to power.

If you want to learn more about the powers and abilities of the ten Demon Lords, check out the video linked below!