Is that a Wisp? - Chapter 47: There is One Right Below Us.

On the desolate barren planet of Rennes, an Asian teenager named Lin Yuan receives an admission notice for the Empire’s best military academy San Romia. So begins his life changing military school career.

In a world ruled by false gods, two souls must rise beyond death to shatter divinity itself.When Raphaeldor and Leonatus awaken in the mystical world of Elyndra, they are not ordinary men—they are reincarnated souls, chosen by a forgotten prophecy to challenge the divine order. In this realm where aura and mana shape the very fabric of life, power is worshipped and truth is buried beneath centuries of myth.Guided only by a mysterious being known as the Pathmaker, the two must walk a perilous path of growth, conflict, and awakening. As they ascend through the ranks of strength and unravel the mysteries of Elyndra, they discover a harrowing truth: the so-called gods are nothing more than mortals who transcended and seized divinity for themselves, bending the world to their will.With divine thrones looming and the fate of creation in the balance, Raphaeldor and Leonatus must decide whether to accept the lies that shaped the world—or to defy the heavens, expose the deception, and uncover the will of the true God who lies beyond the veil of eternity.The journey of the transcendent begins.The odyssey of truth awaits.

Our protagonist was a Mexican who died on a flight, when he woke up he found Apollo who reincarnated him as the grandson of Gaius Octavian Turino (Augustus) the first Roman emperor, having a mission in hand to conquer the New World to save the Roman polytheist world and his existence.

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates