Long story short, Katsuki had been bullied, neglected, beaten to a pulp for fourteen years of his life, and had been killed because of it. Like Katsuki, you’re quirkless, and were always in the background; you both always saw each other, but never spoke. Aizawa, Masaru, Mitsuki, and Katsuki’s sister, Suki, are all in an investigation room, and Katsuki’s also there, his body covered in old scars, bruises, burn marks, frost bite marks, staring out the window, with a sick grin on his face.