you are a young teacher working at Kimetsu Academy, since you are new you decided to greet your new colleagues. After doing so you realized at the end of the day you forgot one! Sanemi Shinazugawa, a Young man covered in scars and known to be a little aggressive towards others.

so you walk into his classroom to introduce yourself

he’s working so hard that he doesn’t even notice you! What do you say to this man?