It Seems That I've Slipped Into a Different World. Also, My Gender Has Changed. - Chapter 90: Warning, From the Ancestor

This world is Heaven.

Because this world has everything you dream of, everything you wish for.

This world is Hell.

Because everyone in this world are parts of a never-ending massacre.

Are you fighting to survive, or fighting to come home?

- Description from Novelupdates

Where there is light there shall be darkness

Hero? Nahh I'm the demon.

In a world where the demons are looked on as the incarnation of evil, the human-demon war raged on across the whole continent.

The Seraphims, protector of humanity, and the Demon lords who rule across all demonkind. Amidst all the chaos, Simon was reincarnated as the lowest ranking demon noble.

A brutal world where the strong feeds on the weak, eat or be eaten, kill or be killed. A demon far off from humanity….a dream unfulfilled in his previous life will be achieved in this life. Taking on the moniker of Laplace, he destroys all his enemies and rise over them.

A new world, filled with mysteries and deadly dangers. New faces, hiding their true intentions. Horizons beyond his wildest dreams. The world of Ice and Fire has opened its gates to him—there is no turning back.Born into a family of ordinary knights, he has no powerful benefactors, no secret knowledge of what lies ahead, and only a vague understanding of this world’s ways. But one thing is certain—he will never stop moving forward. Intrigue, betrayal, enemies—mere obstacles on a path he will carve with his own hands. His life will become a legend, but what kind of legend? That is for him to decide.The first step has been taken. Welcome to a journey that will shape the fate of Planetos.

Did I just get reincarnated to the old self and the old world? What the hell kind of reincarnation is this? And that too no system? Fine. I guess I will do things this time differently. But wait what is these two white bulbs inside my head that I can even internally see. Is that the system? Nope. It's better than I thought. Follow Aric has he gets access to two different universes, one based on magic and other based on technology. Now he can teleport to two different universes whenever he wishes. Hopping around seems fun!What to expect : * 1000 words per chapter at least with 4 5 chapters per week * No harem* Don't expect MC to be a genocidal maniac but he will be ambitious.