The supporting character's harem is very normal - Chapter 472 Meeting Amleth

When I woke up, my father was a nouveau riche whom everyone despised, and I had five great brothers: a black actor in the entertainment industry, a useless lawyer in the field of law, a sickly quack in the medical field, a plagiarizing dog in the design industry, and a school bully.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates

Zhu Kang, a trafficked soul, was captured by an evil organization and was stripped of his real memories. Unaware of the dangers he worked for this evil corporation as a system.One day, all of a sudden, fifteen men dressed in black started a shoot-out killing all the other systems.In desperation, Kang threw himself into a transmigration device that tossed his soul into a random world.“System 202 has escaped.... a-again.....” one of the black-clothed men said. Trembling, he glanced at their team leader.Kai Alden gritted his teeth. “You let him slip away so easily! Send me into that world. I will capture my dear System and bring him back here,”

Shi An is the last Abyss Dragon in the world. Since he was bored, he decided to go into a deep sleep while hugging his treasures. After fifty thousand years of satisfying slumber, Shi An opened his eyes only to discover that he had become a weak human with short hands and legs.

He glanced down at his mysteriously downsized body and then lifted his head to look around his empty cave. “……” Where is my powerful and majestic body? My big tail? Most importantly, where are my treasures?!

After thousands of years of hard work, sleeping just once has sent me to square one.

***

In the year 2202, the conflicts between humans and monsters are becoming more and more intense. Although the monsters are strong, the fantastical species that used to rule the continent have all but disappeared.

Shi An, the Shi family’s youngest son, is Mage Academy’s infamous mage who has no magic power. Each student’s magic power is measured at the beginning of the school year. Shi An looked at the three destroyed magic detection equipment and innocently asked, “Eh? Are these equipment’s quality not very good?”

During actual combat training, low-ranked monsters fled before Shi An could get close. Shi An looked at their fleeing figures and innocently exclaimed, “Yay, lucky!”

Everyone else was speechless. “……?” I believe I am dreaming.

***

Mu Heng——human species’ strongest mage——is the only remaining human who bears the noble dragon slayer bloodline.

He coldly and arrogantly said, “Dragons? Extinction is their best outcome.”

A long time later, Mu Heng turned his head back to look at the dragon cub reclining on the piles of treasure. Mu Heng withdrew his gaze and leisurely asked, “Are there any other jobs? I want a well-paid one.”

Extinction is out of the question now. As a matter of fact, I can only earn more money so that I won’t get kicked out of bed at night.