Overpowered Archmage Doesn't Hide His Talent - Chapter 210: Change Everything

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

Chi Yue had never thought that the man she provoked while drunk would bring disaster upon her; if possible, she would rather have never met him at all.—“The day I'm released from my sentence, I'll marry you.”Chi Yue, dressed in a red dress, smiled seductively, “Fine, as long as you have the heart to send me there, as long as you can marry me on that day.”He personally had her incarcerated; the day he was released, all he received was her urn.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

Marcus Manfred dreamed of joining the United States Army. That dream ended the day an accident took his life.But he woke up and met a Goddess who told him that he can be reincarnated with a weapon system. He accepted it and was reincarnated in another world.The Military Weapon System, grants him access to modern weapons and equipment. Rifles. Tanks. Fighter jets. Even warships. But everything has a price.To grow stronger, Marcus must take on requests from towns, nobles, and kingdoms: clear monster nests, hunt demons, repel invasions. Each completed quest earns him funds to expand his arsenal.But this world is not Earth.Magic bends the rules. Dragons rule the skies. Demon armies march in the dark. And medieval kingdoms do not take kindly to a man building a private army beyond their control.In a world of swords and magics, can Marcus survive using his modern weapon cheats? Or will magic crush modern firepower?