Demon King's Surgery Fruit

A few observations, plus a little creativity - The fruits of surgery are far stronger than you think! What will happen when the characters in One Piece really use their brains to develop their abilities? Welcome to the technologically advanced pirates whose strength system is so high! Dig deeper into the setting behind One Piece, the origin of demons, the nature of devil fruits, and the secrets of the Celestial Dragons. ... Hopefully these poor characters don't go crazy. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.