An ordinary person finds himself in the world of High School DxD (AU), where a System grants him immortality and the complete set of Vritra Sacred Gears. As he explores various worlds, he evolves into the Black Dragon King.

Throughout his journey, he encounters and saves numerous heroines, forming deep bonds with them and gradually building a harem of companions. The story chronicles his quest for power, the challenges he faces, and the intricate relationships he develops across these diverse realms.

The multiverse includes: High School DxD, Testament of Sister New Devil, High School of the Dead, Yuragi-sou no Yuuna, Danmachi, Black Clover, Campione, Jujutsu Kaisen, Tensura, My Hero Academia, Eminence in Shadow, Tower of God, To Love Ru, Prison School, Demon Slayer, Maou Gakuin no Hangyakusha, Magical Explorer, Mobuseka, Food Wars, Kaguya-sama: Love is War, Oregairu, and more.

Disclaimer: Given the extensive range of worlds, the novel will be lengthy, focusing on slow, natural romance. Heroines won’t fall in love instantly; instead, their feelings and bonds will develop over time.

There are about three chapters that might make you feel a bit uncomfortable. I actually forgot about their actual age while I was absorbed in writing, which resulted in a few uncomfortable early chapters. It was my blunder. But the later chapters are completely fine to read. This is my first time writing ever. So, I hope you will give this fic a chance. Happy reading....


Except for the original characters, none of the content or photos belong to me. All rights go to their respective owners. Your support on Patreon fuels this exciting adventure! 

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(Change @ to a)

It already has 15+ chapters more than WebNovel.

WebNovel is hosting a fanfic contest, and I'm thinking about joining. If I do, what kind of fic would you guys like me to write?


Mixed Worlds:Strike the Blood + A Certain Magical Index + Yuna and the Hot Springs + Campione! + My Teen Romantic Comedy SNAFU + Kaguya-sama: Love Is War


2. Power: Perfect Replication — the ability to copy anything, from materials to quirks or talents. The Copy Cat Hero.


Mixed Worlds:My Hero Academia + other worlds


3. A Danmachi fic or a crossover involving Danmachi and other worlds.


4. Or suggest something completely different!


Chapter 140 - WebNovel Fanfic Contest.