The supporting character's harem is very normal - Chapter 531: The law of this world

What would happen when someone from our world was suddenly reborn into the world of My Hero Academia with a Gacha System that rewards him with abilities, techniques, and skills from Jujutsu Kaisen? Grand epic fights and crazy shenanigans as he goes through the story to cause chaos and change the world to his liking.

“That baby is mine, and so are you,” He declared, pointing at Kate’s belly while his deep green eyes gazed at Kate, like a viper ready to strike.Kate couldn’t believe that he– Henry Grant, her new boss eight years younger than her, was the father of her unborn child.“We should be together by default. But I will give you a choice. Go and suffer with your deadbeat husband, or come with me, I will show you the fun you’ve missed.”=====For the past five years of her marriage, Katherine “Kate” Woods, 32, had always believed she was infertile. She was unable to conceive a child and her deadbeat husband Matt always insulted her for it, calling her a useless woman despite never finding a job himself, forcing Kate to be the sole breadwinner of their family.Yet, he still had the nerve to cheat on her with her own sister!Heartbroken, Kate escaped to her office late at night with four bottles of strong red wine. To her surprise, she wasn’t alone.A handsome young man stood in her office, watching her.He refused to give her his name, but offered to keep her company for the night. With lust and booze coursing through her veins, Kate readily abandoned herself to her basest, most repressed instincts, seducing the nameless but willing visitor.In her drunken stupor, she boldly declared, ”If my husband wants to sleep with every woman on earth, then two can play that game.“She didn’t care if they did it raw, as she always thought she was barren. Only to find herself staring at a positive pregnancy test a month later.Kate Woods, the supposedly ‘barren woman,’ was pregnant.The stranger had accomplished in one night what Matt could not in five years.Now that Henry has given her a choice, would Kate leave her deadbeat husband and jump into the sea of uncertainty with this young man?Or would she stay with Matt, her husband who cheated on her for the sake of their families?

She died in her prime as the Queen of Song.

After being reincarnated, she becomes a simple trainee.

Losing her former glory? It doesn’t matter—no one can compete with her voice as a beautiful singer.

Mocked by her lowly birth? It doesn’t matter—her true identity is enough to make the whole world tremble.

She owes huge debts? It doesn’t matter…

A powerful boss once whispered to her, “Your debt will disappear if you become my woman.”

But the proud her would reply, “I’m sorry. I would sell my art, but not myself.”

- Description from Novelupdates

“Gu Hangshen! Your sister stole my man, and you helped her do it! Your whole family is rotten!”“Whatever my sister owes you, I'll compensate you.”“And what will you compensate me with?”“Me.”“...”Later, he not only gave himself up as compensation, but he also came with a clingy little bundle of joy...