Ryongul

[Mature Content]

[NO NTR]

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 MC will not start as a villain, but something will shift his mind in the future.

All-in-One System: All I Need is Erotic Coins

The vampires and human servants from the castle kept going through the tunnel, but it would take them a few hours to leave it.

Gerard stopped talking after Serana's slap — only a crazy person would keep challenging her.

So their trip was going fine, with everyone feeling relief after escaping the Undead Legion with their life. Only Serana was not feeling that way, as she wanted to see Damian again.

Deep down, she knew he was fine, alive, but how long? His fate could change at any second, and she was powerless to help him.

"Even if I escape, what can I do against an army of undead alone?"

She could not understand why the Undead Legion was there. It was almost a myth, and they never had grudges against the vampires.

Serana did not know, but the Undead Legion was not there for the vampires, but for Damian.

Bathing Time