No CP+redemption]
In a pure white world, only people have color, and those who lose color will die.
Dealing with all things in pure white, when the affinity of all things reaches 100%, the sky will be dyed with colors according to the degree of sincerity. Those who can successfully dye are called heaven dyers.
When the world is filled with color, the dead will be resurrected.
(The protagonists I wrote about are all singles, so don't read if you don't like it)
Purpose: Protect the environment