In JJK With Naruto Powers - Chapter 20: Maki’s Internal Thoughts

In a world where humanity lives in suspended space, children undergo a fishing test when they come of age. Those with immaculate talents have the possibility of becoming great fishing masters.

In the endless sea, every life is imbued with a sacred mission. There are fish that can fly, turtles that have absorbed the worldly essence, and whales that can devour the heaven and earth… There are also countless fishers.

Fishing is an art.

There is an ancient saying: If you can’t fish, you might as well be bait.

Follow Chen Ming as he accepts disciples, establishes a sect, and fights his way in a world that deems him a cannon fodder.
He goes against any common sense using his wits and novel knowhow to finish missions and arm himself against his cruel fate.

- Description from Novelupdates

This thought had grown deep in William’s mind!