A young man from Earth travels to the world of One Piece, where he is the four-year-old half-brother of King Valpo of the Drum Kingdom, known as the 'Medical Power'.
In order to avoid Valpo's pursuit, the four-year-old Michu resolutely seized the Tuntun fruit that originally belonged to Valpo, overthrew Valpo's rule and became the new king.
The strongest king who could single-handedly fight against the Shichibukai, the generals, and the four emperors was born.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
