Wortenia Senki (WN) - Volume 4 Chapter 25

For those who fought in war, war never ends.

But Xiao Yuan’s war has just begun…a war that has ended.

Guderian?

Rommel?

Manstein?

The USSR needs only one soldier… Shulka

- Description from novelbuddy

Once upon a time, a hero had been summoned to a different world in order to defeat the demon king. After the war stretching 3 years ended the commendable hero slew the demon king. And he was forcibly deported back to earth after being dismissed.

Such bullshit!

Elves in addition to beast race, dwarfs and demon race. Even though I wanted to make a harem in the different world I saved! My dream will not come true on earth, where there is no magic at all. Thus, the hero returns on his own. Without the blunder of being extradited to earth this time, he will build a harem of his own in a different world.

Dante was an ageless warlock who had been going from one battle to another for hundreds of years.Following a chaotic encounter with an evil god, Dante unintentionally activates a contract with a demon, thrusting him into the modern world.Resolved to live a peaceful life, his intentions are halted when he finds himself in the middle of a conflict among rival mafia factions—dabbling with the ominous demonic magic that he knows best.