The supporting character's harem is very normal - Chapter 37 Miam!

After a disaster, a despised son-in-law quietly undergoes a shocking transformation. With both medical and martial arts skills, a battle for redemption is on the brink of erupting...

[ Warning: Extremely Mature Content ]Betrayed by Heaven. Cast down to rot – big mistake.Cain was Heaven's executioner – the angel they sent when mercy was off the table. But when he killed the wrong angel, the archangels fabricated charges and threw him to Earth with his divine core shattered into a thousand pieces.They expected him to die in agony.Instead, he woke up with a system that offers him a path back to power: The Celestial Corruption System. The method? Seduce women and absorb their essence to rebuild his strength.From helpless and broken to supernatural enforcer, Cain claws his way through the hidden underworld – assassinations, faction wars, forbidden territories. Every mission brings him closer to power, and every woman he corrupts brings him one step closer to revenge.Vampire queens. Demon huntresses. Rival assassins. Witches playing dangerous games. Mob bosses' wives. The untouchable. The forbidden. The married.He'll seduce them all.Because Heaven wanted him to suffer and fade into nothing. Instead, they gave him exactly what he needed to become something far more dangerous than he ever was before.They should have made sure he stayed dead.---What this book will have:An exceptional story and plot outside the R18 elements.A dark, ruthless anti-hero.Supernatural faction warfare.———No Yuri, No Ntr

After slumbering for years in the darkest pits of the abyss, Haruki Shin is awoken by the demon lord of lust. She tries to remind him of a contract he signed with her in exchange for the power that would help him exact his revenge in the mortal world.

However, who or what he wanted to get revenge on? He couldn’t remember. Replaced with a hazy mist, his memories had long since faded. But to the mistress of lust that didn’t matter as she forced him back into the mortal world with the demonic body of an incubus.

Feeling lost he’s forced to adhere to each of her commands, and despite his refusal, he can’t resist the binds of the contract. Eventually, however, as he learns more about his tragic past, and the existence of the lustful system he’s been blessed with for his revenge, his path to becoming a monster finally begins.

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It was in the middle of the night that the woman who would be the Duchess came to see me.

She said my father and mother died, and my kind uncle became king.

She said it’s not worth it for me, the crown prince, to be living in hiding, too.

“A while ago, Your Highness had been hiding from me. With all due respect, is that for the sake of survival? Just because your parents died doesn’t mean you have no reason to survive. Actually, that fact alone made it all the more reason why you should live. If you die now…”

If I died now?

When I asked her while looking at her eyes, the woman eventually brought out the harsh truth with empathetic eyes.

“It’s like a dog’s death.”

“That’s rude….”

It’s been a long time since I said that. In a short while, he has been treated as a madman and beaten to death just by saying similar things. She loosened her arms that held me and I suddenly stiffened up due to it. Because I thought she might have loosened her arm to hit me. But she didn’t.

She knelt down with one knee in front of me, just like a knight.

“Hastred’s Sarian raised her salutations. May you accept it gladly.”

My first knight is beautiful and kind.

“Are you on my side?”

“Yes, Your Highness.”

It was all a lie.