In The Supreme Fantasy World, Back In Time And Do Whatever You Want! - Chapter 1 - I Am Back!

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

- Description from novelbuddy

I, Zatiel, Abyssal Lord, Ruler of Death and Destruction, Nightmare of Dys, have AWOKEN!!!!!.

His life contains events that can shake the universe:
-Fighting against Tiamat, Creator of Evil Dragonkind, in the first circle of hell, while billions of demons and devils butcher each other beneath them
-Start a World War against the Heavenly Race, and transform himself into a Golden Sun while he slaughters their greatest warriors, the Archangel.
-Enter the Final Gate and fight against the Outer Gods.
-Tearing the nine levels of Baator during his battles against the Prince of Evil, Asmodeus.

With his memories as a ruler of the Abyss and a Universal Existence, Zatiel will rise again.

Wang Cheng: Boss Chu, I think my mom will not agree two hundred percent with our affair, so I have a once-and-for-all proposal, do you want to hear it?

Chu Yifeng: Let’s hear it.

Wang Cheng: It’s very simple, why don’t we break up and not worry about anything?

Chu Yifeng: What you said is quite reasonable, but we can discuss this matter further in the bedroom.

Wang Cheng: …I’m just kidding. Look at my sincere face. How could I break up with you?

Chu Yifeng: It’s too late.

- Description from Novelupdates

After losing his life in... an unfortunate incident, Ezra is rejected from the summoning by the First Light. He is instead banished from existence. There he meets a being, that claims to have been dreaming since before existence.He agrees to serve this Eldritch entity if he can let him live again. Ezra's soul is then stuck into the body of a young priest, Priest Izikel Vau-Leotard.In this new world, where gods exist and they bless their believers with Divine energy to perform miracles, Izikel is forced to navigate his new life, while serving a Chaos god.In his new life, Izikel vow to live the life of a hero, but what can he do when it seems like Fate itself scoffed at his words.This is Izikel's reality, one he barely has a grasp of, but one he is definitely going to conquer at all cost.CONTENT WARNING:This novel contains themes of suicide, cannibalism, and extreme brutality, along with other dark and potentially distressing topics. Reader discretion is advised..