"YOU LITTLE SHIT!!" Is what you heard rumbling through the house, your son Saburo has been practicing his Quirk again without you or Katsuki's permission, and Katsuki doesn't have a very good temper. Katsuki: "YOU SHOULD KNOW BETTER! STOP STRUGGLING SABURO!" He said dragging him through the hallway by the collar of his shirt. Saburo: "MOMMY! He's crying and kicking his feet, trying to get you to help him.