The supporting character's harem is very normal - Chapter 517: Lathel and Tinryss

In a world where human and monsters relied on mystical fruits and their inner power to fight for dominance, a lost soul was thrown, given the powers from all the other worlds he’s known. But there was a catch; he had no control over what power he would get! With knowledge beyond that of most, he sails his path to the top of the one piece world!

This story unfolds during the later stages of World War II, where a man, scarred by the horrors of war, finally grasps the profound and harsh realities of the world. In this world, those at the top laugh and celebrate, while those at the bottom sacrifice their lives in futile conflicts driven by pride and meaningless ambition.A modern soul transmigrates and fuses with the original soul of a body, creating a unique and extraordinary existence. To some, he is a villain; to others, a madman.In a world steeped in cruelty, this man, determined to secure a place among the decision-makers, struggles to break free from the ranks of those powerless to control their fate. To achieve his goal, he resolves to shatter the chains of law, then the chains of morality, and finally the chains of mediocrity.

Just days before his final discharge, Sergeant Shin Young-joon, a military chef by profession, witnessed the doom of the world.An apocalypse, that came out of nowhere and ruined the world that he used to know.In the blink of an eye his battalion fell into shambles, all the communication lines, and radio frequencies were severed, and before him was a message stating:[Congratulations on your awakening!] [Occupation: Novice Chef Lv.1] If only he had a profession like a warrior or an assassin, he might have attempted to stand his ground alone.But what was given to him was clearly the supporting job of a chef.With the recent developments in progress, he didn’t have any choices, other than saying, “From now on, I’ll be the one to feed you all.”

The end of all worlds approaches.

The Demon King Order harvests lives from all manners of living beings.

Within this darkness full of despair,
A single person escaped from space-time, returned to before the world collapsed, determined to change the fate of the past.

But as time pass, he gradually finds out that the Apocalypse isn’t quite as simple as he thinks…

- Description from novelupdates