The supporting character's harem is very normal - Chapter 469 Barosik vs. Rakka

[The Demon King is Dead], a story in which the Demon King got immediately killed in the Prologue. I became the ‘Demon Prince’ of said novel.

…Help me.

In all my life, I’ve only made two mistakes that I regret. The first was filling out my entrance exam application wrong, and the second was offending Zhong Yuan. If I had to use an idiom to describe the impact of my mistake, it would be simply, ‘Life is no better than death’. And if I had to use an idiom to describe Zhong Yuan’s offenses to me, it would be simply, ‘Too many crimes to record’. And yet, for as evil and wicked as he was, he attracted girls the way that flowers attracted bees and butterflies.

It happened that one day, for some reason, I taunted Zhong Yuan, “The King of Hell sent you to torture some more people, didn’t he?” Without a change in expression, he replied, “In order to torture fewer people, I decided to just choose one person to torture for the rest of my life.” I asked him, “What do you mean?” He smiled at me and answered, “If you don’t go to hell, who will?”

- Description from Novelupdates

In the world of the gods, everyone is a god, develop believers, gather faith, and lift the kingdom of God into the starry sky.

The young Xu Luo came to this world and started the Zerg dominance system.

Ding! Extract the sawgrass gene, and the springtail + sawgrass becomes a mantis insect!

Ding! Extract the snail gene, and the beetle + snail becomes a beetle.

…

Face Huggers + Angels + Dragons + Power of the Ancient Gods become Leviathans!

Extract the genes of all creatures, and the Zerg army sweeps the world!

(Book Friends Group 682275028,)

It can be updated on the shelves, don’t worry about eunuchs

- Description from novelbuddy

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!