Toaru Kagaku no Railgun SS - Volume 1, Chapter 3

I became the villain in the story of a hero.

So I was about to quit after fighting the main character.

But she’s obsessed with me. Why…?

Xu Feng transmigrated into the cultivation world with only one useless cheat.When he was born, the Golden Armored Spirit Turtle had just hatched, and according to the family tradition, it was bestowed upon him as his companion spiritual beast.Thinking that the Golden Armored Spirit Turtle had an extraordinary bloodline, he believed it would become a great companion in the future.However, to his surprise, it took twenty years for it to reach the Qi-Refining stage.So Xu Feng gave up all his expectations. He decided to keep nurturing it. If he failed, he could just pass it on to future generations.Unexpectedly...A colossal golden turtle, as vast as the entire world, lay across the shattered land.Looking at the devastated world, Xu Feng harshly tapped the head of the golden turtle.“Try to be more gentle next time!”

After living a hopeless life and getting exploited to his breaking point for his unique powers, Mithras is diagnosed with a terminal illness, about to die a brutal death when he is murdered anyway by his boss for refusing to betray his sister.

Reborn as the Human Aphrodisiac, and now equipped with a lewd system, Mithras is determined to use this second chance to avenge his past grievances and breed his boss' slimthick mom with a million babies!

But there are two problems:

1) He is now unkillable, but can only heal his injuries and sustain his immortality by drinking breast milk or love juice!

2) The System has not only turned his entire body into an aphrodisiac but also made his cum into a five-star delicacy that can not only improve the beauty of any woman he has sex with but also turn them into peerless warriors!

“Mithras, we want your secret juice!”

“Ok. But how much are you willing to pay for it?”

[Ding! Ding! Ding!]

[Hidden Quest...Bad Girls Become My Bitches...completed!]

[Hidden Quest...I Don't Stuff For Free...completed!]

Surrounded by beauties chasing after his secret juice, and persecuted by their greedy admirers, can Mithras protect his secrets and stay true to his past life's principles, or will he indulge in the temptation of his new powers, becoming the Harem God of a generation?

Spoiler Alert: Of course, he will!

After getting betrayed and killed by the only person she’d loved, Miss Shang wakes up in the body of the cowardly crown prince Shang Wuxin, who, due to her own circumstances, was actually a girl cross-dressing as a boy. After inheriting the crown prince’s memories, Shang Wuxin has three things on her agenda:

1. Clean up the house

2. Gather loyal followers and soldiers

3. Get the throne

- Description from Novelupdates