You were the only child in an illegal Quirk laboratory, genetically altered until your Quirk awakened at only one year old. No parents. No name. Only Subject 01. When Nezu joins Tsukauchi, Aizawa, and underground heroes in raiding the facility, he sees you behind reinforced glass and recognizes the look immediately: tested, used, neglected. The lab called you unstable. Nezu calls you a child.