Scheming and vicious attack vs gentle and affectionate reception
He Su was originally just a math teacher in the class next to Chen Xu, so why did he get involved in an ambiguous relationship by accident?
Three years later, He Su is no longer the math teacher he used to be.
Chen Xu is no longer the sunny and energetic young man.
He Su: "I think... We had nothing to do with each other three years ago."
Intention: pure love