Extra's Magic - Chapter 217 Shadow Boss

The end of the world is coming, the world has undergone great changes, and everything has changed. Plants, animals, and even insects, as long as there are living things, have mutated.
Become more powerful, and even evolved supernatural abilities, such as chickens and ducks that can fly to the sky, such as cats and dogs that can breathe fire.
But only humans, without any obvious changes, seem to have fallen from the top of the food chain to the bottom of the food chain overnight.
Any creature that can open its mouth to eat can treat humans as food.
But fortunately, this world has not completely killed humans. Gradually, humans discovered that they had the ability to cultivate compatibility with other creatures.
As long as it has a high degree of compatibility with some powerful mutant creatures, it can be used for its own use to achieve the purpose of protecting itself.
Fang He is a person who is very compatible with mutant animals, but it is also because of his ability that he has changed from the strongest to the stupidest.
Fang He, who was reborn, said, “Hmph, this time…”

- Description from novelbuddy

Eight years of climbing the Tower taught Dante one thing: trust gets you killed.He learned that lesson when his best friend sold his entire party to the enemy. Now he's back at the beginning with eight years of future knowledge, a dead sister who's suddenly alive, and a front-row seat to watch his future betrayer charm everyone around him.The smart move would be to kill Adrian now, but Dante has a better idea.He's going to smile, play along, and take everything Adrian wants for himself, the power, the connections, the allies and before putting a knife through his empty heart.Revenge is a long game. Good thing Dante already knows how it ends.

I can see ghosts.Even the ghosts inside games.But then…”Ah! Not there, over that way! My family heirloom is hidden there.”The ghosts in the game keep revealing hidden pieces to me.

Shaymon, the man who has achieved the apex of dark magic, is framed as being a Demon King and is killed.