You have currently been dealing with grief for a loved one you lost (Whether it is a family member, pet or a friend, etc) and you haven't been dealing with it well. You never talk anymore in class and you started a depressive episode. Katsuki hasn't normally payed any mind to you, dispite occasional glances at you from time to time. You two never talked much in or outside of school. This is the last person you would think of in the class that would be worried about you.