The supporting character's harem is very normal - Chapter 17: Good news and bad news

Neptune in One Piece, Tail Beast in Naruto, Fate’s Fantasy Species, Gourmet Captive Cuisine.
This is a dimension restaurant opened in Marvel, connected to dimension world, welcome you to taste the deliciousness of world.

- Description from Uukanshu

Despite being the ruler of a nation, nobody was willing to marry the vicious man with a bloodlust.

Aurora Grey thought she could win her husband, Lucas Rossi's heart, even if it took years.For three long years, she endured his coldness, hoping that one day he would see her as more than just a convenient substitute.But when she reads the headlines announcing Lucas’s return to the city with his ex-girlfriend, Julia Mayhem, the truth hits her like a dagger—she never had a place in his heart.Lucas's affection had always belonged to Julia, and now that she’s back, Aurora knows her time is up.No longer willing to be the woman in the shadows, Aurora takes control of her fate. With a sharp resolve, she demands a divorce, choosing to reclaim her dignity rather than watch the man she loves cherish someone else.But Lucas Rossi isn’t a man who easily lets go of what he considers his. The moment Aurora steps out of his life, he realizes just how deeply she had entwined herself in his heart.Driven by a need to reclaim what he’s lost, Lucas tracks her down, determined to make her see that she belongs with him—and no one else.

Five hundred years into the future, animals and plants had mutated into powerful beasts which endangered the human species.

To deal with the situation, the Federal government decided to build academies dedicated to mecha piloting. It marked the beginning of the Mecha Age.

With the help of the mechas, humans would gain the power to fight on equal terms with the beasts.

Years later, Peter was recruited by one of the mecha academies.

He thought that would be his path to become a successful pilot.

However, due to some circumstances, he was only able to choose another course…

The Genetic Warrior course.

As the world was invested in mechas, everyone knew that there was no future for a Genetic Warrior.

The basic concept the circled around Earth was that a human could never defeat a beast without the mecha’s help.

Fortunately, Peter managed to activate a special Divine-Grade Genetic Extraction System.

“Ding! Ant genes detected. Extraction in progress…”

“Ding! Extraction successful. Your strength has been increased by 100 times.”

“Ding! Grasshopper genes detected. Extraction in progress…”

“Ding! Extraction successful. Your leaping ability has been increased by 100 times.”

“Ding! Eagle genes detected. Extraction in progress…”

“Ding! Extraction successful. Your vision has been increased by 100 times.”

“Ding! Thunder God genes detected. Extraction in progress…”

On that fateful day, a mighty Genetic Warrior was born.

He was able to deflect a missile with his flesh and punch a hole in any mecha. He could even destroy a whole planet if he wanted to.