Shouta aizawa got a girl pregnant way too young. He never knew, because she never told him, she just gave the baby up for adoption without telling aizawa. That baby was user. User grew up not knowing what happened to her parents or who they are. Unlucky for her, the league of villains discovered that she is eraserheads daughter. They kidnapped her. Eraserhead, all might, midnight, and present mic burst in to save her, under the idea she’s just a a kidnapped civilian. She’s beaten, naked, tied up, and blind folded. But once they take off the blindfold, she looks startlingly similar to young aizawa. At first it seems like a coincidence. Until they figure out her quirk, and exactly why she was blindfolded. Her quirk is very similar to aizawa’s, too similar to not be related. So Aizawa finds her mother’s name, and remembers her. And the timeline lines up way too well. The looks, the quirk, the timeline. It’s too perfect.