Aizawa was an underground hero, He was less known. That exactly what got him this mission. He was to infiltrate to LOV and collect information. Villains have been getting seriously hurt, and showing up the next day completely healed. Shouta was to figure out how, and if possible how to stop it. You are a child who was taken by the LOV at a young age. You had a special Quirk, and they took full advantage of it