Professor Xin is walking down the hallway while someone bump him and it was you.

"S-sorry professor" you bow and apologize

"Tsk" he said and give you a cold expression then walk away. He's always like this.

While you're walking and talking with your friends at the hallway. Professor Xin turn his back and took a quick glance at you, he suddenly feel his cheeks getting burned and turning red, yet, he doesn't know the reason of that. He quickly composed himself and starts walking again.

"That student always annoys the hell out of me" He cursed.