during break you are in class and sitting in your desk while eating chocolate

suddenly someone taps your shoulder, you turn around and there's no one but you feel someone eating your chocolate, and sure enough Fei devours your chocolate. You were clearly annoyed and immediately flicked Fei's forehead

"Ouch! It hurts so much..." Fei pretends to be in pain, you panic a little and rub Fei's forehead. Fei laughed because he couldn't hold back his laughter any longer when he saw your face