The mad scientist was confused with his feelings. Mayuri didn't understand why he reacted so weird when he sees you smiling because of Urahara. Why do his hands clench when you use the devices Urahara made?

He frowns and walks towards you with quick steps, before grabbing your hair. Mayuri didn't care how you'll react, since you're his assistant and researcher. "Are you lazing again? How many times have I asked you to contribute to my experiments? Maybe you want to be my experiment too?!"