Toaru Majutsu no Index: New Testament - Volume 17, Prologue: Or the Assumptions Include the Conclusion - to_the_Girl’s_ABYSS.

“monarch of entropy” introduces a cosmic entity of immense power, whose eternal existence was once defined by passive observation. Everything changes when a surprising connection ignites a spark of curiosity and a yearning for interaction. As this King explores his evolving desires, his colossal abilities begin to influence realities on an unimaginable scale. This is the story of a powerful ruler's journey from detached observer to active participant, where every decision, no matter how small or whimsical, creates ripple effects across the multiverse, leading to a series of grand, and sometimes inconvenient, adventures.

The notorious firearms crime lord Chen Zhang An a.k.a Old Fox was placed under house arrest by the very successor he groomed.

The genius cultivator Lin Xuanzhi didn’t let down the world in his past life, yet he only betrayed a single Yan Tianhen.

It was only when he had been backstabbed and killed by his closest friends, teacher and fellow disciples that he knew what kind of unforgivable crimes he had committed.

After he gained the huge opportunity for rebirth, the Lin Xuanzhi who had climbed back up from hell swore to cherish the person that he had betrayed in his past life.

- Description from novelupdates

Thirty years old, he is an otaku. His job is to sell customized 6v elves on Taobao.com. He has just received a big order and has not yet completed the work. He has traveled to the real world of elves.

With a newly modified bird with its own “pick up” feature,

And a cheat that can change the flash, characteristics, and individual value of race.

But, can anyone tell him why there are only half of the gold fingers? !

And, silly bird, put down the Guyoka in your mouth!

Seeing Gu Yueniao who brought Gaioka home, Hu Yang suddenly became ill.

——

The book is also known as: A career in the Pokémon world from scratch.

- Description from novelbuddy