The protagonist has no cp and can eat at will.
Most people will die with regrets, but some people have too much resentment and become evil spirits causing trouble in the world.
Hua Yannian was a college student majoring in computer science. He accidentally awakened a supercomputer in his brain and could erase other people's regrets with one click...
Intention: Get out of the inner haze and welcome the light in the world