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

Vanessa's face displayed clear signs of being shaken as she looked down, visibly afraid of her surroundings. Damian glanced at her but refrained from saying anything, understanding that revealing his acquaintance with her would be unwise.

After a few seconds, Vanessa mustered the courage to direct her gaze towards the new prisoners, and when her eyes met Damian's, she was overcome with disbelief.

For a brief moment, Vanessa yearned to run towards him and embrace him, but the realization of their circumstances swiftly dampened her enthusiasm. Yet, hope flickered within her.

Vanessa found herself utterly alone, making escape an arduous task. However, Damian's arrival brought a glimmer of improvement, and she felt confident that he would guide them through this ordeal.

"Look at what we have here," the pirate captain remarked, eyeing Damian from head to toe. "This one appears weak. Where did you find him?"

Through the Secret Passage or Killing Everyone