The Heroine is My Stepsister, and I'm her Final Boss - Chapter 81: End it.

The day dungeons appeared on Earth, everything changed! From ordinary beasts to monstrous ones, attacks were common throughout the globe, and no one was safe.

After countless studies using these beasts as subjects, Humankind developed a serum capable of awakening incredible abilities in humans, leveling the battlefield.

With the serum came heroes and villains, those who wished to use their powers for good or bad.

The Garmony Upper School was a place for the elite with the sole purpose of creating heroes to fight the villains and explore more of the dungeons after the beast attacks increased for no apparent reason.

Damian Romero, a youth who received the serum after turning 18, yet got no unique ability. It was not uncommon for one to not receive power, but it was still a blow to one's pride.

He went rogue after the news, drinking alcohol and having a good time with women, and it was at that moment, when he was putting his toy to play, he got a surprise.

[All-in-One System Unlocked]

Damian's unique ability was a system with multiple functionalities, but after he studied it, it seemed this system worked with a different type of coin called Erotic Coins!

Improve his body? Buy any item or unique ability from his system's store? All Damian needed was Erotic Coins, and he knew how to earn them!

The red meteor shower rained across the sky, a black fog engulfed the world.

After waking from a night of torture and agony,

Humans discovered they no longer dominated the world.

—The hunters have become the hunted.

After the apocalypse, I struggled for survival for ten bitter years, but ultimately couldn’t escape death.

But when I opened my eyes again, I had transformed from an ordinary 35-year old woman into a beautiful young man of 18.

A different gender, a world that is both familiar yet not, an apocalypse that has vanished without a trace, and an unexpected return of 17 years of youth.

Looking around, I discovered I had a powerful, protective big brother and a gentle, charming little sister.

Just as things couldn’t possibly look any brighter—

The end of the world came crashing down again.

And this time around, is it fight? Or flight?

It was the year 2050. The world had released an online game, “Second World”, that shocked the public beta. Gold from the game could be exchanged for real-life currency, attracting countless players. Every country in the world fought for game resources. The main character immediately entered the game after this wave.

After entering the game as an adventurer (job before job change), he stepped into the first stage of his life. It was a stage that even a child could pass.

He thought that it was a normal stage. However, he did not expect to be locked into the game and continuously repeat the stage!

As time passed, the stage finally let him pass as per normal a thousand years later. He finally left the dungeon after clearing the stage. It was only now that he realized that this was only the second day of the game!

He realized that this was not a dream after he saw his attribute panel. What followed was a variety of system notifications!

“Reached MAX proficiency with the ax—Ax God!” “Reached MAX proficiency with the sword—Sword God!” “Reached MAX proficiency with the heavy shield—Shield God!” “Reached MAX proficiency with all weapons—Almighty Master!”

“As your proficiency as an adventurer has overloaded and you have not changed your job in a long time, you can now undergo a unique job change as we have detected your proficiency with weapons—Battle God!”

A deep crack appeared on the ground when he struck the level 1 wild monster with the small wooden sword in his hand!

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.