One Piece Fanfic Devil Fruit Era

Following the melee between all the Haki masters, a large number of Haki users were exterminated, and all Devil Fruit users were killed, causing all Devil Fruits to be re-refreshed into the world. And those Haki users slowly aged and died. 600 Years have passed since the Age of Discovery. This new era is extremely lacking in domineering power. Because the domineering power to restrain Devil Fruits has disappeared, the era of the rise of Devil Fruits has arrived!