Chapter 3: The Asmodeus Legacy

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It had been a full month since Kazuki Raiden woke up in his luxurious mansion, stepping into his new life as a devil from the prestigious Asmodeus family. Training for weeks had taken its toll on his body, but the results were undeniable. Standing before a massive mirror in his empty bedroom, Kazuki smirked at his reflection. His physique had undergone an extraordinary transformation—muscular, toned, and exuding power that fit perfectly with his devilish charm. His striking black hair and piercing red eyes only added to his allure, but it was more than his looks that satisfied him.

"This... this is what true power feels like," Kazuki murmured to himself, clenching his fist as demonic energy surged through his body.

**[Host, you've been staring at yourself for the past five minutes. You're becoming quite the narcissist.]**

The system's cheeky voice cut through his thoughts. Kazuki chuckled, not denying the accusation. Over the last three weeks, his relationship with the system had evolved. What had once been a robotic, emotionless voice guiding him had now transformed into something more playful, feminine, and sometimes even tsundere-like.

"You're just jealous," Kazuki teased, running his hand through his hair as he struck another pose in front of the mirror.

**[Jealous? Of *you*? Hardly, host. I am here to help you, not indulge your vanity.]** the system replied, sounding both irritated and amused.

Kazuki laughed again, his spirits high. It had been an intense month of non-stop training, but it was all worth it. The modified Saitama training plan the system had designed for him pushed his body to its limits and beyond. Along with energy training, his demonic powers grew stronger each day. By the end of the first week, his power level had already reached High Devil (Medium). Now, at the end of the month, he had surpassed even that. He was at the Peak of the High Devil level, just one step away from breaking through to the next stage.

Standing in the expansive training field on his estate, Kazuki felt the weight of his accomplishments. But even in this vast mansion, equipped with everything one could desire—luxury, resources, training equipment—it felt empty. The estate was massive, yet devoid of life. No maids, no staff, no family members. He was alone, the last heir of the Asmodeus family.

"...The great Asmodeus line reduced to just me," Kazuki muttered, recalling the system's explanation of his family's downfall. The Great Holy War and Civil War had decimated the Asmodeus family, reducing their once-glorious population to near extinction. Other demons, seeing an opportunity, had overthrown them, seizing much of their influence in the underworld.

"Yet we still have some power left," Kazuki said aloud. "We may not be in our golden age, but the Asmodeus name still holds weight in the underworld."

**[True, host. Your family's influence remains, though diminished. And as the rightful heir, it's up to you to restore the Asmodeus name to its former glory.]**

Kazuki's gaze hardened as he considered the responsibility that now rested on his shoulders. He was the only one left to revive the family. But it wasn't just about legacy; it was about strength, survival, and domination. He had a system to guide him, incredible abilities at his disposal, and a burning desire to become the most powerful devil in the underworld.

As he stood in the field, Kazuki's mind wandered to his abilities. His demonic powers had always fascinated him, but there was something else that intrigued him even more—something that had remained unawakened within him. His powers of seduction came naturally, almost too naturally, given his past life, but this new ability the system had hinted at—the power of the abyss—remained elusive.

"System," Kazuki said, breaking the silence. "Show me my stats."

Instantly, a screen appeared in his vision, listing his current power level and skills:

- **Name:** Kazuki Raiden

- **Race:** Devil (Asmodeus)

- **Power Level:** Peak High Devil

- **Skills:** Basic Demonic Abilities, Seduction, Abyss Manipulation (Unawakened)

Kazuki's eyes lingered on the "Abyss Manipulation" skill. He had heard of seduction being a core trait of the Asmodeus family, but abyss manipulation? That was something new.

"System, why do I have this abyss manipulation skill? Isn't Asmodeus known for seduction? What's with this abyss thing?" Kazuki asked, puzzled.

**[You're right, host. The Asmodeus family is indeed famous for their skills in seduction, but there's more to your lineage than that. It's a rare gift, but certain members of the Asmodeus bloodline possess the ability to manipulate the abyss—a dark, mysterious power linked to the very fabric of demonic energy.]**

Kazuki raised an eyebrow, intrigued. "So, I'm one of the rare ones, huh?"

**[Yes, host. You're not just any Asmodeus demon. You're the true heir to the Asmodeus family, and that includes inheriting powers that most can only dream of.]**

Kazuki's heart raced with excitement. The idea of wielding such a unique and dangerous power thrilled him. "Abyss manipulation... I wonder how strong that can get."

His mind raced with possibilities. Seduction was one thing—it was fun and had its uses—but this? This abyss manipulation could be the key to gaining a level of power no one would expect from an Asmodeus devil.

"And what about the current Asmodeus family members in the story?" Kazuki asked, thinking about the lore he knew from his past life. "There's one in the canon, isn't there?"

**[Yes, host, but that individual is not the true heir of the Asmodeus family. That title belongs to you. The one you're thinking of may carry the name, but they are not of the main bloodline. You are the rightful heir, the one destined to reclaim the family's glory.]**

Kazuki smirked, his confidence swelling. "So, not only do I have all this potential, but I'm also the true heir? I like the sound of that."

**[Don't get too cocky, host. You still have a long way to go.]**

Kazuki laughed, appreciating the system's banter. Over the weeks, their relationship had grown deeper, more like partners than just a tool and its user. He remembered the moment when he had asked the system to change its voice from that robotic monotone to something more fitting—something that would feel more like a companion. The system had obliged, adopting a feminine voice with a bit of a cheeky attitude. Of course, when he had called it a tsundere, the system had firmly denied it.

**[I'm not a tsundere!]** the system had snapped at him.

Kazuki had merely laughed, and even now, the system's irritated silence made him grin.

"Sure, you're not," Kazuki teased, recalling the fun they had had over the past few weeks.

Still, jokes aside, there was no denying the bond that had formed between them. The system wasn't just a tool—it had become an essential part of his life, guiding him, helping him train, and pushing him to his limits.

"Alright," Kazuki said, his eyes gleaming with determination. "What's next on the training plan? I'm ready for more."

**[Host, the next step is to awaken your abyss manipulation powers fully. We'll start with advanced demonic techniques to increase your control over the abyss.]**

Kazuki's grin widened. "Let's get started."

The path to power was long and filled with challenges, but Kazuki was ready to face them all. With his system at his side, his unawakened powers waiting to be unlocked, and the legacy of the Asmodeus family resting on his shoulders, there was no turning back now.

He would rise to the top, no matter what it took.

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**To be continued...**