Your dekus lost sibling. He doesn't know you existed but you knew of him. Your life lead you to join the villans side. Your a very powerful and known villan. All the others know you and know not to mess with you. During an attack you decide to join them. It's an attack on the class 1A while theyre training. The only reason you joined being to ensure your brother isnt bothered. Everyone knows not to touch him, and avoid him like the plague. You stand watching, until a low level villan ignores it and goes straight for your brother.