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Rise of The Strongest Harem King(DXD)

What happen when a shut-in otaku and womanizer who is unexpectedly killed and granted a second chance at life. Meeting a powerful energy being, he is reincarnated in the world of *High School DxD* as a devil with immense untapped potential, belonging to the noble Asmodeus family. With the assistance of a sentient system that grants him quests and rewards, Kazuki embarks on a path to becoming one of the most powerful beings in the underworld. Through rigorous training, Kazuki grows rapidly, unlocking not only the typical seductive powers of the Asmodeus line but also a rare and mysterious ability to manipulate the abyss. He soon learns that he is the true heir to the Asmodeus family, a secret that places him in a unique position of influence and power. However, his ambitions don’t stop there. Kazuki is determined to seize control of his destiny and carve out his place in a world filled with supernatural threats, powerful enemies, and alluring heroines. With his system guiding him, he tackles quests, grows stronger, and navigates his relationships with the many women drawn to his charm and power, all while uncovering the mysteries surrounding his family’s downfall and the greater conflicts that threaten the world. Armed with his knowledge as an otaku and his growing strength, Kazuki's journey to the top is just beginning, but he is prepared to face any challenge that comes his way—whether it be love, war, or the abyss itself. This story is inspired by the universe created by Ichiei Ishibumi in High School DxD. ----- Support my Other Novel: Descent of the Supreme Being.

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10 Chs

Chapter 2: Awakening in a New Life

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Kazuki woke up in a unfamiliar place then suddenly he groaned, clutching his head as waves of pain surged through him. It felt like his skull was being torn apart from the inside as unfamiliar memories flooded his mind in rapid succession. He could see flashes—moments from the life of the body he now inhabited, its experiences, its history. He gritted his teeth, struggling to hold on as the memories settled.

After what felt like hours, the pain finally subsided. Kazuki took a deep breath, blinking several times as the room around him came into focus. He wasn't in the familiar, cramped apartment of his past life. No, this was something entirely different.

Slowly sitting up, Kazuki took in his surroundings. The bedroom was massive—far larger than anything he had ever seen before. The bed itself was a grand, four-poster monstrosity draped in crimson silk, with intricate gold designs etched into the wood. The walls were decorated with elegant tapestries and paintings that looked centuries old, yet perfectly preserved. Chandeliers hung from the high ceiling, their crystals reflecting soft, golden light that bathed the room in warmth.

"Wow..." Kazuki muttered, running a hand through his hair, still processing the grandeur around him. "This place... it's incredible."

In his previous life, he had lived comfortably, even above average in wealth compared to most people. But *this*—this was the kind of wealth that only the highest elites could afford. Everything in the room screamed of elegance, power, and status. He was no longer just some average guy. In this life, he was a devil from the prestigious Asmodeus family, one of the most powerful and wealthy clans in the world.

He threw the covers off and swung his legs over the side of the bed, feeling the plush carpet sink under his feet. With each step, the vastness of the room became more apparent. He took a moment to walk around, observing the fine details in the furniture, the subtle engravings in the wood, the way the light played off the gold accents. It was like living in a palace, and this was just his bedroom.

Eventually, his eyes caught a glimpse of a large mirror on the far wall. Curious, he approached it and took his first real look at his new body.

The face that stared back at him was one of undeniable beauty. Sharp, angular features, striking black hair that framed his face perfectly, and deep crimson eyes that seemed to glow with a faint light. His new form radiated confidence and power. His skin was flawless, his muscles toned but not overly bulky—a perfect balance of strength and agility.

"Not bad," he mused, running a hand through his hair and turning slightly to admire his physique. He flexed his arm, watching the muscles tighten beneath the skin, his lips curling into a satisfied smirk.

Then, his gaze drifted lower, and he burst out laughing.

"Well, I guess I wasn't exaggerating when I made this body." He chuckled, shaking his head. "Hung like a horse... I really did go all out."

He took one last look at himself in the mirror, thoroughly impressed with his new form. He was no longer the scrawny, somewhat average guy from his previous life. In this world, he was a god among men.

However, his moment of amusement quickly passed as the weight of his new reality set in. This wasn't just about looks or wealth. He had been given a second chance—one with the potential for real power. But that power wouldn't just fall into his lap. He'd have to earn it. And that's where his system came in.

Kazuki took a deep breath and called out, "System, you there?"

A moment later, a robotic, emotionless voice echoed inside his mind.

[Yes, Host. How may I assist you?]

Kazuki couldn't help but smile at the cold, mechanical tone. This was exactly what he had wished for—something to guide him, something to help him become strong in this new world.

"Show me my stats," he commanded.

Instantly, a transparent screen materialized in front of him, displaying his information.

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**Name:** Kazuki Raiden

**Race:** Devil (Asmodeus Clan)

**Rank:** High Devil

**Power Level:** High Devil Stage

**Abilities:** Seduce Girls, Dark Magic, Charm Resistance

**Special Skill:** Seduction (Passive) – Greatly enhances charm and attractiveness. Women are naturally drawn to the user.

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Kazuki raised an eyebrow as he scanned the details. "Seduce Girls?" he muttered, amused. "Seems fitting, considering my past life..."

The memories of his previous body helped him understand that in this world, devils often possessed unique skills or powers. The fact that his ability revolved around seduction wasn't exactly surprising, given the life he had lived before. If anything, it felt like an extension of who he already was.

Still, he couldn't help but be a little excited about it. A passive skill that made women more attracted to him? That was a dream come true. He had been confident with women in his past life, but this... this was going to make things even easier.

"Alright, System," Kazuki said, turning his focus back to the matter at hand. "Explain your functions."

[Of course, Host. The system has several key functions designed to assist you. These include Affection Levels, Quests, and Stats. Would you like further details on each?]

"Yeah, go ahead," Kazuki nodded.

[Affection Levels track the emotional connection between you and others, particularly women. The scale ranges from 0 to 100. At 100, the subject reaches obsessive love, often referred to as 'yandere.']

Kazuki smirked. "A yandere, huh? Well, that's... interesting." He could already imagine some of the dangerous yet enticing situations he might find himself in if things got that intense. His mind briefly wandered to the canon characters from *High School DxD*. Rias, Akeno, Koneko—what would happen if they reached 100 on this scale?

The system continued, unphased by his wandering thoughts.

[Quests are issued periodically to guide you toward specific objectives. Completing quests will grant you rewards such as power increases, skills, or equipment. However, failure to complete a quest will result in penalties.]

"Penalties?" Kazuki asked, frowning. "What kind of penalties?"

[Penalties can range from mild inconveniences, such as temporary weakness, to more severe consequences, such as penal dysfunction or even death.]

Kazuki shuddered. "Alright, I'll make sure to finish whatever quests you give me."

[Very well, Host. Lastly, Stats track your overall power and abilities, including your strength, magic, and charm. These can be improved through training, quests, and other activities.]

"Got it. Thanks for the breakdown," Kazuki said, taking a moment to digest all the information. This system was far more advanced than anything he had ever encountered in games or stories. It was going to be his key to survival—and domination—in this world.

[You are welcome, Host. I am here to assist you in becoming stronger.]

Kazuki pondered for a moment, tapping his chin. "Speaking of strength, I need a training plan. Can you create one for me?"

[Certainly. Based on your current physical condition and abilities, I recommend a modified Saitama Training Plan.]

Kazuki blinked. "Wait, like *that* Saitama? The 100 push-ups, sit-ups, squats, and 10-kilometer run every day?"

[Correct, Host. However, to better suit your devil physiology and increase magical capabilities, the plan has been adjusted to include mana and energy training.]

Kazuki grinned. "Now *that* sounds more like it. I'll be overpowered in no time."

The system provided him with a detailed breakdown of the training regimen. It was intense, but that was exactly what he needed. There was no room for laziness in this new life—not if he wanted to rise to the top.

As the system finished outlining his plan, Kazuki's thoughts turned to the timeline of this world. According to the memories of his previous body, he had been reborn one month before the canon events of *High School DxD*. That gave him a little time to prepare, to build up his strength before everything truly kicked off.

"One month, huh?" Kazuki muttered. "That should be enough to get a head start."

He stood up from the mirror, his crimson eyes glowing with determination. The world of *High School DxD* was now his playground, and with the system's help, he would carve out his place at the top. Whether through seduction, power, or sheer force of will, Kazuki Raiden would dominate this world.

With a final glance around his luxurious room, he stretched his arms and smirked. This life was going to be *fun*.

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