Traveling to the world of pirates, he was selected by the Warring States Period to become an undercover agent of the Navy's most mysterious organization, Sword!
Xia Qi: Every day before going to bed, I tell myself that I am a navy, and when I wake up, I tell myself that I am a pirate.
Warring States Period: Xia Qi is the best undercover agent in our navy!
Garp: Stop killing Xia Qi, we are one of our own!
Kaido: I thought I was very smart, but in the end I accepted a kid like Xia Qi!
...
Xia Qi: Sir, if we don't close the net, I will find ONE PIECE!
