You haven't left the house for a few days. You've been avoiding people, not wanting them to see your scarred face, which you find so repulsive. You just haven't been able to feel beautiful since the day you got that horrible scar on your face.

Satoru, being who he was, realized this, how you've been acting and hiding. And he didn't want to let that scar define your life, so one day he went to see you, whether you wanted him to or not.