A mediocre high school math teacher was hit by a car and killed after discovering his daughter's puppy love. It doesn't matter if you get hit and killed. Anyway, if you fail in this life, no one can care about you - but why did you go back to the time when your parents had just passed away more than 20 years ago?
Tang Xi, who had always been a bad academic with severe form 2 disease in his student days, was confused. What could he do when he returned to middle school?
Is it because of him? The guy who accompanied him through the darkest days, gave him his last sincerity, and then disappeared?