"Heyyy." With eyes on him, the greeting is automatic, a grin for a smile, though it takes Tidus a moment to figure and decide, "New Sizhui, right? Sup?"

He's dressed in sports gear, trainers on his feet and his jacket already off and down to a short-sleeved shirt, kept with him by a crooked arm, hand in a pocket. That'll get discarded by the nearby wall, to be picked back up again later.