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 first level of the Skyfall Tower went fast, but the second one? Damian and his crew sailed for three days following Radagak's ship. That land was farther than expected, and the idea of being fooled crossed Damian's mind, but it shouldn't be possible because the ships only went in a straight line.

It was not like they were sailing in circles; at least, it did not look like it from Damian's perspective, but maybe Radagak was fooling him somehow.

Damian wanted to go there and question him, but it was nighttime, so he decided to stay put and wait. He and the other ship were making a stop, as both crews were getting tired, and it would be impossible to keep the ship going.

They feared someone would try something while the other slept, so Damian and Radagak placed their ships close together, using an anchor to stay put.

Captain in the Ocean (4) - Betrayal and Mermaid