The Demon Queen's Contract - Chapter 69: Finding evidence

In a world where human and monsters relied on mystical fruits and their inner power to fight for dominance, a lost soul was thrown, given the powers from all the other worlds he’s known. But there was a catch; he had no control over what power he would get! With knowledge beyond that of most, he sails his path to the top of the one piece world!

- Description from Novelupdates

This red dragon came from the vast wilderness, coveting all the powers of the world. He has held countless titles: Mountain Fury, Purgatorial Calamity, Red Emperor, Ember Dragon…The world trembles under the shadow of the great dragon. He ignited the surge of the magical industrial revolution. In the empire he established, wyverns roar, cannon fire resounds, steel behemoths appear in the sky and on the earth, and disasters from other worlds run rampant.“Submit, or die.”Cassius spread his sky-shading wings, looking down upon the trembling humans, elves, and dwarves beneath him, and spoke thus.………A story of a red dragon with a built-in player template conquering, ruling, and transforming another world.(Pseudo D&D, Fourth Catastrophe, Red Dragon, translation )

Sequel of Allison, taking place about 17 years after the original series.