MTL - Cultural Invasion In Different World (Cultural Invasion into Isekai) - Chapter 75 Devil's knowledge

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

The strongest Hero in history, Nakamoto Keisuke.

He was summoned to another world in the spring at the age of fifteen years old, and when he successfully defeated The Demon King, he was already thirty-two years old. He had finished his role in another world and returned to Japan, but the reality that had been waiting for him was, “Middle school graduate with seventeen years of blank period” label. He couldn’t find a decent job and had no choice but to spend his days working part-time.

Before such a Nakamoto, a beautiful girl who self-proclaimed had come to return the favor, appeared. “I’m the reward for Hero who had defeated Demon King”, said Angelica, a girl who came from another world that persistently tempted Nakamoto to make her his wife. Together with a high school girl who looks like Elsa, his beloved girl that he lost in another world, Nakamoto with his cheats skills got caught in a harem life.

I fell into a wannabe murim.But apparently martial arts is supposed to be difficult?Hm… Is it really that bad?

“Why aim for a world when I can conquer the entire universe?”Draco Valenstein was the kindest human alive, a young man full of ambitions. One day, by some unknown means, he died. Not knowing how or what happened, he was granted 3 wishes before transmigration.In such an unforgiving world brimming with powerhouses, kindness was a weakness. But for Draco, who had been reborn as a demon, such a past was long gone.Evil is the only way!