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

Someone tried to kill Damian, and he was well aware of that. But what did that mean in the grand scheme of things?

"Only two people know my identity here, and I did nothing strange. Also, the killer had already killed someone and would not make another move. So, the ones behind my killing are the Duke and perhaps his daughter."

It was not difficult to think about, and Damian quickly realized the Duke was trying to kill him, but why?

The reason, the most essential part, was still unknown to Damian, but he would find out eventually.

He did not panic and did not leave his room. "Let's create a fake slime body to get me some time. Also, it is not like they will investigate my dead body."

Damian made a slime body with many shooting holes and cut himself in the arm to put some blood in. The only reason that would work was that they would only discover his body in a few hours, and the blood would dry out by that time.

Castle Map