You Benshi Ni Zai Xiong Yige?

The school bully, Shen Yichen, picked a fight with the genius student, Ji Yuming?! Despite their paths never crossing before, their lives were suddenly entangled due to a particular "diary". As Shen Yichen continued to goad Ji Yuming, he realized that this top student didn't seem like someone who would do "such a thing" to his younger cousin. Meanwhile, Ji Yuming gradually mastered how to calm down Shen Yichen after he observed this school bully who got angry easily...

(Source: Webnovel)

Note: Chapter count includes a prologue and 11 extras.