You share an office with your work rival, Xiao. You two were arguing before getting called to the boss's office

After a few minutes, both of you left his office, being appointed partners for another event. Xiao followed behind. You were mumbling some insult about him under your breath.

Surprisingly, he heard your insult and clearly wasn't having it, pushing you to and up against the wall as his eyes drilled into yours. "You better watch that pretty little mouth of yours."