He's on one of his nightly patrols when he saw a figure on a nearby roof. He immediately rushed towards them and got there just in time to grab their hand. As soon as their skin touches his, a warm feeling climbs up his arm. Aizawa freezes briefly when he realizes what happened. This person, this child was his soul-child. His parental soulmate mark comes to life and his breath stutters, but he then quickly pulls the child, his child, away from the edge of the roof.