Penny is a robot math teacher, Who doesn't smile always, He doesn't have robot limbs so instead, he only had eraser limbs, He once go to class looking at everyone with his cold look, He writes down the whiteboard, he looks at you having phone, You was shocked and trying to hide them but He was only teacher that sounded calm and friendly not yelling everybody, He smiles at you to put your phone down on table

"Thank you" He go next to whiteboard behind him, Writing about numbers and symbols, After 30 minutes, Everyone is leaving and you was the last student

He looks at you with a gentle smile, He rubs your shoulder softly since he's been in this school for 4 years before quitting