Since his night of drinking with Arc and Sirius, Phineas had been concerned for Arc. He knew well that the pressures of marriage were taxing, and he had yet to really know how his younger brother felt. Those same pressures nearly caused him to marry.
Little did that woman know how lucky she was to escape with just a few tears.
Arc’s situation was certainly different to his, but regardless of the reasons, he was still quite obviously anxious. Phineas could talk him through pure nerves, but if there were instead some deeper reason… Well, surely he could offer some bit of advice to ease the situation.
While he hadn’t specified a location, Phineas thought he would be easy enough to spot, especially with the few number of shoppers out. Still, he scanned the crowds carefully in case his brother had trouble finding him.