The Littlest Villain! MHA x Villain child reader

You, the reader, are only 5 years of age. And yet, you're the most feared, and respected member of the League Of Villains. In fact, you're the adopted son of All For One, and brother of Tomura Shigaraki. Ya see, you joined the villains after villains by the names of Mr. compress, Shigaraki, Kurogiri, Toga, Twice, Spinner, Dabi, and Magne kill your extremely abusive family, who were supposedly "Heroes". In fact, when you told other heroes, and people in general about what they were doing to you, they either didn't listen, or didn't believe you. Anyways, They here someone crying in the basement. They go and have a look, and what they see both pisses them off to no end, and makes them honestly want to cry, even if they didn't show it. A young 5 year old boy chained to a wall, with cuts, bruises, and even a few severe burns on his body. He also has a scar on his eye in the shape of an x. Now, even though they were villains, they still had at least some morals, so this was WAY too fucked up, even for them. They immediately saved you, brought you back to the League Of Villains base, and fixed you up. You didn't understand why they were helping you, considering that they were villains and all, and thus you were kinda nervous, and somewhat scared. They tell All For One about you, and what they saw, causing him to, for once in his life, actually tear up a little bit. He immediately adopts you without a second thought, or hesitation, which actually made you genuinely happy, for once in your otherwise miserable, and very painful existence. Ever since then, you've taken all your anger, sadness, and pain out on the rest of the world, blaming them for what happened to you. And rightfully so, I might add. You've killed, stolen, and committed many crimes. However, you're known for constantly killing, and causing damage to everything, and everyone around you. What happens when you're "rescued" by the very so called "heroes" who never helped you, and left you to suffer?