I was Drafted Into a War as the Only Human - Chapter 32: War Part 23 - Prove it

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.

“I love you, Brys,” Storm whispered.“Love?” I scoffed. “Do you even know what love is?” I raised a brow at him.“Of course, I do. I love you, Brys,” he repeated as he leaned closer to kiss me. “I've had feelings for—”The words died on his lips. His eyes grew wide in shock as blood spluttered from his lips. “Wh... What did you just do?” His gaze went down to the knife I drove deep into his chest.“What's wrong, Storm?” I smirked. “Don't you love me anymore?” I mocked.Though it hurts me to do what I did, I had to do so, for my safety.If I don't kill him now, he won't hesitate to do the same to me, in the future...*****Mega, a nerd who is obsessed with reading novels and comics, ended up reading a comic that sent his blood boiling. He cursed the omega in the book who was so pitiful that the Alpha used him only to kill him when he felt the omega was useless.Unfortunately, Mega had an accident on his way on an errand, and by a sheer stroke of luck, he found himself in the same trashy comic.And what was more?He discovered that he now resides in the body of the omega who was abused by the Alpha he admired.Now, he's determined to turn his fate even if it means going against the plot, and his stupid system.He was determined not to make the same mistake his former host had...

The boy named Ulysses has longed for the respected profession of priest since he was a child, and has been working hard for this ideal. However, by chance, he became the heir to the Demon King chosen by the “Book of Curses”. After experiencing many setbacks and blows, he is still working hard, trying hard, trying to return to the path of priesthood.

However, there are many powerful enemies in front of him.

Always getting lost, the heroic fiancee of Ulysses is single-minded, Rasha; guarding the “Book of Curses”, the little devil Aya who will do anything to turn him into a demon king; very worried and worried about his own children, the extreme north. Earth’s Ice Phoenix mother; Helen, the strongest weapon girl who can destroy the world for her father.

A witch with very bad magic but excellent swordsmanship, a saint with divine power, a dragon who burns like a flame, a Hydra who loves to mate and love everyone together… Today there are also many brave warriors who are ready to crusade against the Demon King.

In front of these lovely and enthusiastic warriors, can he really become a pure-hearted priest as he wishes?

(In this story of love and justice, the girls who can “tear down” the demon king are all brave)

- Description from novelbuddy

This is an alternate history. Decades after the fall of the Eastern Jin Dynasty, the world is still in chaos, although there is hope for reunification.