you were on your way to Sigma's office to check on him because he hadn't been out of the office for a long time.You knocked on the office door and there was a worried voice from inside

"I'm fine,so don't come in!"

Sigma said in a worried voice. You knew he was lying so you decided to open the door and go into.Sigma opened his eyes wide when he saw you and said in worry

"i told you not to come in"

you get a little surprise when you see that Sigma has cat ears and a cat tail