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

Unhindered in the Demon Domain, the king is solitary!

In the world where immortals and demons strive, a good natured fellow sought the Demon Dao in search of justice.

At the end of his journey, he had eventually become this generation’s Heavenly Demon Emperor.

Although I am not fond of slaughter, I do not dislike it!

Desiring to see the Demon World, this is how I strive, this is how I become the Peerless Demonic Lord!

- Description from Novelupdates

Have you ever thought about how your life would turn out at the age of 18?Well before I could even say that I was an adult to even say I was going to conquer it.The world had seemed to already be determined of what mine and the rest of humanity would be when the first Leviathans was made public to our world.

[Warning: Mature Content and a ruthless, villainous, badass mc!]Kael Draven was once the feared leader of an underground mafia empire. A shadow ruler who pulled the strings behind the scenes.But power comes at a price. Kael learned that the hard way when a bullet pierced his ear, and his trusted ally betrayed him, bringing his life to an end.Bang!As his empire crumbled and his body hit the cold floor, all he could think was, ‘What a pathetic way to go.’Instead of hell, Kael woke up in a far more dangerous world, with a body stronger than ever—youthful, shredded, with muscles for days and an ego that could crush mountains.His title? Master of the Crimson Maw.He now led a bandit group that had angered a mysterious force and been wiped out—except for one survivor: a strong, silent gladiatrix who wanted nothing to do with him.To make things even more interesting, his body bore a glowing tattoo that whispered in his mind: “Bond. Through body. Through soul.”But Kael wasn’t one to back down. He didn’t like losing.So what if his base was a dilapidated shack? So what if his army was just one extremely voluptuous warrior?Kael wasn’t here to play small. He was going to turn this ragtag bandit group into a force feared by all, with a harem of deadly beauties who would bow to no one but him!Welcome to the Crimson Maw. Where the training is brutal, the beauties are overpowered, and the only thing more dangerous than an enemy is the bandit king himself.Let the grind begin!

“Hey, have you ever heard of the lunatic roaming around the tower?”“Are you kidding me? Who haven't heard of him yet!?”“Hey hey, are you talking about... that person?”Interesting news travels even faster than light, especially regarding the mysterious figure that everyone in the Ethereal Tower is curious about, the lunatic ascender whom thoughts and deeds are so off-place that even the greatest among them just couldn't grasp his intent, almost as if he is ascending a completely different tower than them.While everyone in the tower talks about the lunatic who lurks on each tower's floor more than he is supposed to, the person they are talking about just goes on his merry way to collecting treasures he wants, and while the world is talking about him.“Come on, give me some luck, maybe roll the hundred times multiplier again...”He's sitting while rubbing his palm together, gambling on something that will make everyone faint.