I Thought This Was Fairy Tail, So How Did I End Up in One Piece After Leaving Seclusion?

The bad news: He transmigrated to a dark age where dragons bring about the end of the world!

The good news: He bound himself to a Dragon King System and somehow survived for ten years!

Chu Jin thinks he's in Fairy Tail. To avoid the Black Dragon King, he trains desperately, mastering all four types of Dragon Slayer Magic. Little does he know...

An 800-meter azure dragon descends from the sky, and it turns out to be one of the Four Emperors, Kaido of the Beasts!

Chu Jin realizes he's spent ten years outsmarting thin air. Enraged, he unleashes a Thunderflame Roar that severs one of the Four Emperors' dragon claws on the spot!

Whitebeard's ten division commanders land on the island, only to be mercilessly subdued with one hand by Chu Jin. But they don't know...

This terrifying power, enough to sweep across the New World, is only the newly unlocked [Power of the Dragon]!

In the Great Age of Piracy, an invincible Dragon King who can trample the Four Emperors makes his grand entrance!