Time travel as soon as you wake up? He also traveled through time and entered a stand-in book, which was also an agreement stand-in.
It's okay, that's not the point.
The most important thing... If he doesn't do a good job as a substitute, he won't get the salary he deserves.
Moreover, the male protagonist...
Have evil intentions towards him! ! !
No, if he wants to change his passive and miserable fate, the first thing to do is... Being able to bend and stretch is the most important thing to save his life.
Intention: Love yourself well