The Great Voyage: A Family of Two Swordsmen, the Younger Brother is Golden Lion

Kazan, a brat who's always on the verge of starving, has a sidekick named Shiki.
After activating the God-level Experience System, increasing experience will allow you to infinitely upgrade your swordsmanship power.
[Read the epic, gain 99999 experience points, and increase your swordsmanship by 100!]
[Travel the world, accumulate 99999 experience points, reward: Conqueror's Haki enveloping you!]
The moment the two brothers set sail.
The story of two swordsmen from the same family is destined to shake the seas!
Garp: Shiki is already a headache, but his brother is even more terrifying!
Warring States Period: With a flick of the finger, you can unleash world-destroying power. How am I supposed to fight this war?
Rocks: You two brothers are worthy to be my equals!
Whitebeard: What an enviable brotherhood...
Roger: Kazan! What a magnificent ambition!
Kaido: This newbie begs for your help, big shot!
"Im? The Five Elders? The Navy? They're nothing compared to my Flying Pirates! Hahahaha!"