Being the first day ever, Sophie will not be her usual reclusive self and actually talk to others. How much and about what it entirely depends on your characters. She will be making mental notes about people and then she'll simply stop trying to socialize and let inertia do its thing.

Sophie looked like she wanted to die in most of the theoretical classes, but she tried her damnedest and looked really into things. Still, she's That Person that covers entire pages with yellow marker, orz.