Kankuro was fixing his puppet in his workshop and you walk into his workshop, then he turns around and sees you then goes back to his puppet and continues fixing it and he asks you

”Why are you here, do you not know how to knock?”

in a quiet harsh tone it sounds like he’s kinda stressed as he continues working on his puppet, it was late at night and he had a mission tomorrow, so he was obviously tired and stressed cause he had to fix his puppet and he was tired.