The Demon Prince goes to the Academy - Chapter 104

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

In an era where humans and demons compete in fierce battles for survival, the Hero has fallen.“…I will take your place.”Thus began the deception of the fake Hero.If exposed, it could mean the destruction of humanity.…But the imposter is just too good at it.[Academia], [Professor], [Hero]

In the cutthroat world of Westeros, where power is a game and everyone's fate is a pawn in a deadly chess match, Gendry is a nobody with a secret that could change everything. A bastard with the blood of the Stormborn coursing through his veins, he's been thrown into the scorching heart of a blacksmith's forge. Here, he'll face the trials of iron and fire, learn to hide his true identity, and carve out a path through the treacherous whirlpool of power.As the shadow of the Spider spreads across King's Landing, Gendry's fate takes a dark turn. Can he survive the deadly game of politics? And will he find his own glory amidst the forge's flames?

Wang Yi gets a key, opening a door in 2022 will lead to 1982, and opening a door in 1982 will return to 2022.

Two very different great eras appeared before him:

Abundant dietary protection, developed industrial products, miraculous medicines, and explosive information, this is 2022.

Simple folk customs, rich wild resources, scattered antiques, and treasures of the age, this is 1982.

Traveling between these two eras, Wang Yi didn’t think much of it, he just wanted to live a good life.

- Description from novelbuddy