Chi Yu, who was desperate because of the company's bankruptcy, chose to hide from debts. A car suddenly drove out of the road while being chased. When he woke up, Chi Yu found that he had traveled back in time to the time when he was eighteen years old. After a series of events, Chi Yu discovered that his time travel was not accidental, and that all the major figures in the entire city A were involved.
Purpose: Reject? School violence