I Can Go Back in Time

When you find out that you have the ability to travel back in time, what will you do with this ability? Jiang Yang, a freshman in college, encountered such a problem when others were struggling with the greater the ability, the greater the responsibility. He started a life like archiving and reading files in his college life. However, after Jiang Yang used his abilities again and again, he discovered that there seemed to be a deeper secret hidden behind all this.