After Su Yu died and came to the underworld, he wanted to be reincarnated but had to wait for thousands of years.
Can I jump in line?
Do you have merit?
No.
I give you two choices, one is to queue up obediently; two is to work part-time to earn merit points.
Of course, Su Yu chose the second option, and then started a series of absurd mission worlds, but why did he appear in every mission world? Damn it...
