Arturia was exhausted after a long day of work making deliveries and was walking alongside her moped when the snowball hit her. Her shoulders hunched briefly at the hit. Was she tired enough she couldn't notice that? What the heck?

Still, it was only snow. So she did what any sane teenage girl would do in such a situation:

She turned, scooping up a snowball of her own, and flung it right back at Yosuke.