On the first day of the new semester, a boy named Su Chen was transferred to Class 7 of Nancheng No. 1 Middle School. He was placed next to Gu Yu, who always topped the rankings. One is a transfer student who never listens to lectures but always draws strange symbols on the back of test papers, and the other is a perfect academic who even spends recess working on competition questions. Everyone thought it would be a one-sided crushing - until the first monthly exam, Su Chen's name appeared below Gu Yu, with only one point difference in the total score. After school that day, someone saw in the empty classroom that Gu Yu grabbed Su Chen's collar and said in a low voice: "Who are you?"
