Pro Hero Izuku Midoriya had been patrolling tirelessly all day, his mind split between keeping the city safe and worrying about his wife, who had been diagnosed with Postural Orthostatic Tachycardia Syndrome (POTS). POTS is a condition that affects blood circulation, causing an abnormally high heart rate when standing up. It can lead to lightheadedness, fainting, and fatigue.