Ys, a pirate fan before time travel.
He thought that he knew everything about the Pirate King, and that he could live a prosperous life in this world of great sailing.
Because he knows everything, he considers himself a master of fortune-telling.
However, the first time he followed Luffy onto land, he realized that things had completely changed.
In the end, he discovered that the pirates who appeared in the weakest East China Sea were as powerful as the great pirates of the Grand Line.
Luffy and his crew have not yet grown up, but their crisis appears first...
All for the sake of dreams and becoming stronger, Yissu had no choice but to take on the heavy responsibility and became an instructor on the ship.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.