The Protagonist's Sister Is Actually The Strongest - Chapter 51: Gaia

Oosuki Masato is an ordinary high school boy who is magically transported to an alternative world, but for some reason his doting, over-protective mother comes along as well.

“Heroes killed my parents. Now I wear the mask of one. Until I can bury them all.”At seven years old, Hernan Vale watched his parents — two powerful heroes — brutally executed in their own home by the very people they trusted most: the legendary super-team known as the Zodiac 13.They thought he was dead.They made sure the world blamed villains.They covered their tracks.But Hernan survived — and never forgot.Ten years later, under a false name, Hernan enters the prestigious Hero Academy, hailed as a prodigy. To the world, he’s a rising star. To his classmates, he’s charming, calm, unstoppable.But inside?He’s a weapon. Waiting. Smiling. Counting names.As he trains to become a licensed hero, fights real villains, and rises through the ranks, Hernan plays the long game — earning the trust of the Zodiac, learning their routines, studying their weaknesses. One by one, he’ll bring them down.And this time, he won’t hide in the closet.But the deeper he goes, the more blood he spills — the more he wonders if he’s becoming worse than the monsters he’s hunting.And when love, loyalty, and lies collide, Hernan may have to decide:Will he save the world like they think he will...or finish burning it down?

The person who was locked away inside the thorn-covered tower was not a princess, but a witch who employed the powers of darkness.

A brave young hero came searching for the tower in order to kill the witch.

– Light would force the darkness to recede, and grant it eternal rest

The witch wished.

That things would end with, ‘and the hero lived happily ever after killing the witch,’ like in the fairy tales.

And so, she had devised everything to happen in accordance to her wishes.

But the boy, who had grown up in but no time at all, would make the unfamiliar face of man’s from time to time.

“You want me to kill you? ……Do you really think I’ll let you go?”

Reality was very different from the fairy tales.

“The people don’t know of the precious treasure locked away in the tower.

I won’t let anyone else have this god given treasure, this crown of god surrounded by thorns that no one else could recognize.”

The hero gave the witch a slow and deep kiss.

“I am the true victor, and no one else.”

Those people killed her grandmother, murdered her younger brother, trampled the people she deeply cared about, and even took her own life.

It was because she trusted her ambitious stepmother and half-sister;

because she mistakenly believed that womanly virtue is to have no talent;

because of her noble status and origin….This is what caused her death.

Buried in river water, Ouyang Nuan, gritted her teeth and spoke, “I, Ouyang Nuan was wronged in death. Even if it takes forever, I will become a devil, and in the next life, will not let you off!”

When she once again opened her eyes, Ouyang Nuan was sent back in time to when she was twelve years old. Around this age, her forehead was scarred, her brother fell into the water, and in three years she will be married…

In this life, she will try to change everything to guard and protect those she cares for from those with treacherous intentions. She will live a glorious life!

- Description from Novelupdates