Cinnamon Bun - Chapter Four - Dusting Off History

A side story series featuring the girls of Kyoukai Senjou no Horizon.

I got hit by a truck and woke up in a world unfamiliar to me.[System rebooting… AI core active.][What can I help you with?]With a hologram screen floating before me, Chat GTP, the pinnacle of artificial intelligence.[Combat mode activated.][Here is the steps to create a atomic bomb.][Efficiency: 99.8%. Shall we proceed with conquest?]And with it, I became the most dangerous man in this world.

[A soul forsaken by the Gods and a body on the verge of death - The Darklord of the Endless Abyss has noticed your existence and is offering you a contract. Will you accept?]As he lay on unfamiliar land, his body covered in wounds and blood, Levi heard the voice of providence that he had craved for years.In a magnificent and mutated future, the advancement of technology and space exploration has opened new paths unknown to humanity. Being the curious creatures they are, and with hopes of saving the dying Earth suffering from resource depletion, humans began to explore these unknown lands.It was there that they discovered the treasures of the otherworld - artifacts and magical items that defied all scientific knowledge. But along with these treasures, humans also encountered dangerous and vicious monsters capable of tearing them apart with a flick of their fingers.However, humans were persistent. The treasures of the otherworld were too enticing to ignore. They struggled against the odds and found a way to fight these monsters by making contracts with the gods.The gods of the unknown lands bestowed extraordinary powers upon humans in exchange for the promise of extinguishing all the monsters. But not everyone was so fortunate, like Levi, who failed to pique the interest of any gods, and became one of the Forsaken.The Gods had forsaken him, so Levi decided to forsake the world - he made a contract with the Demon King himself!

A lost soul from Earth transmigrates to a world of cultivation and finds himself in the body of a playboy noble and complete waste. Except he doesn't have any memories, can't let anyone know he's not the same person and is immediately involved in a conspiracy with a powerful noble family.Luckily he came to this world with a power, whatever he gives to someone as a gift he'll get it back 100 times better.His first target?His new wife, the former top young genius.