This Manhwa is a fantasy type manhwa where the main character got the ability named "The Gamer" although there are many type of abilities, his ability is quite rare and strong, because like in the game when a player kill a monster or boss, it will drop some coins,gold, any form of game money while in here when he kill monsters he can earn "Korean Won" which is basically korean form of money and a random items from weapon, armors and many other varieties.
And because of this ability he became stronger faster compare to other people in this world, by killing monster and boss, he gains item, won, experience.