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

Damian returned to the carriage, the smell of blood heavy in the air. Inside, he found Elena, June, Luna, and Kai, who had been watching over the carriage to ensure nothing happened.

"All good," Damian said. "I saved the sister of that girl who was faking an injury on the road, and of course, I killed all the bandits. Let's continue our journey."

Only 20 minutes had passed from the moment they stopped to when Damian returned. The process of ending the lives of all the bandits had been easy for him, and they resumed their travels.

The situation with Kai took a sharp turn after that. He stopped badmouthing Damian, and a hint of respect could be seen in his eyes after witnessing Damian's strength and cold-heartedness.

The rest of the journey was quiet, and nothing happened in the next two days. They had to sleep in the carriage again both nights on the road, just like before, and cook over a campfire.

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