The supporting character's harem is very normal - Chapter 427 Darkness King vs. Dorack

Hakuto's life changes forever when his father Shin— a man with highly questionable morals—marries Kagura Kurotsuki, the CEO of a multinational company, and they move into her luxurious mansion.There, he meets the alluring daughters of his new stepmother: the seductive Yuzu—who doesn't hesitate to tease both her new stepbrother and her stepfather in ways that are... rather bold—and Rika, more introverted and irritable, yet just as sensual.But nothing is truly as it seems...Kagura is a succubus, but Rika and Yuzu are different.They were born from a demon and a vampire—something that shouldn’t be exsiste.Because of that, demons, vampires, even humans want them.But Hakuto won’t allow it.He’ll never let anyone hurt his beloved stepsisters.

Avo was born to destroy New Vultun. In a twist of fate, he’ll become its only hope for salvation. The gods were the enemy. The slaver. The chains. With dreams of paradise, humanity slaughtered them and stole their powers, opening the path to become more – to ascend. Instead, they nearly destroyed the world. Vast hive cities serve as the final bastions against the crumbling of reality. New Vultun is the greatest of them all, and within its borders, ascenders wage war to determine the laws of existence itself. The world descends ever deeper into ruination. Avo was born a weapon, a slave to his instincts and his masters. He and his brothers were made to burn New Vultun to ashes. Everything changes when Avo gains immortality and becomes heir to an impossible legacy. He must ascend the megacity of New Vultun. He must challenge the very tyrants that usurped the gods. He must finally free the world from chains.

Chang Xia is an anomaly in the tribe——

She doesn’t dress up, make friends, or play around. She likes to hoard all kinds of wild vegetables, and she doesn’t eat meat, saying it’s unpalatable. The whole tribe was worried that she would not grow up and die.

When she became an adult, she directly picked up a sick seedling and married her.

later.

Chang Xia used the hoarded wild vegetables to farm and feed the entire tribe; she built houses and roads, so that the tribe would no longer suffer from cold and freezing; she also conquered the entire ancient continent with delicious food.

Finally, the clansman knew that the sickly seedling beside Chang Xia was once the most powerful totem warrior of the tribe. At this time, the clansmen understood that Chang Xia was the most powerful.

- Description from novelbuddy

Death is only the beginning….He is the boss of a small bar. Despite his gentle and amicable appearance, he is actually cold and detached. He was born with the ability to communicate with spirits but sealed it away, unwilling to get involved with the supernatural.She is a rather unqualified lawyer. Timid as a mouse yet hates evil with a passion. Her birthdate is inauspicious but she’s also blessed by Buddha.A weird and bloody case forced them together. Her cases grew more and more dangerous while his sealed abilities awakened and grew stronger. They were initially repulsed by each other, which turned to understanding, getting along, cooperating, and finally a mysterious yet fierce attraction. With the help of a friend, the two of them solve the city’s horror stories one after the other.