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 mansion harboring the pirates exuded an eerie stillness as night enveloped its premises. In a secluded corner, three individuals donning identical uniforms gathered, their voices hushed.

"I have reservations about this course of action," Marcus expressed, his hand absently scratching his head.

Seline placed a reassuring hand on Marcus's shoulder, her voice infused with determination. "I understand that you have grown accustomed to the absence of freedom in this place, but we must seize the opportunity to break free."

Relenting, Marcus sighed, conceding, "Alright, alright. Remind me again of the plan. What makes you so certain there is a hidden passage?"

"Trust me, Marcus," Seline insisted, conviction lacing her words. "I stumbled upon an ancient map that hinted at the existence of a concealed passage within this mansion."

What are your goals?