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 news about his friends. It was something Damian had been waiting for a long time, and apparently, it was finally time.

"What news?" Damian said, grabbing Frederic's arms, "What news?"

Frederic put his hands on his shoulder, "Relax, calm down. Sit."

Damian breathed in and out, trying to relax and wait for Frederic's words.

"The good news is that someone saw Vanessa and Hazel. Unfortunately, no one has seen your father yet," Frederic said, "But the bad news is that Hazel and Vanessa are not on this dungeon floor."

"What? Why? Why would they leave the safe floor for humankind? It does not make sense." Damian said.

He could not understand the reason behind their actions, and Frederic was in the same situation.

"I have no idea. The only information I have is that someone saw the two in a small town near a portal that leads out of the tenth floor," Frederic said.

Damian is a Necromancer