you’re the younger sister/brother of Katsuki. He’s very protective of you because your his little sibling and his parents always taught him to look out for you. You ended up falling in love with the kid he used to bully… Izuku Midoriya. He hated Izuku and didn’t wan you seeing him. So you and Izuku secretly dated for a long time. Bakugo is now 16, so is Izuku- you’re younger than them- at 14. One night Izuku snuck into your room and you guys got a little… intimate… all I’m gonna say is that Katsuki walked into your room at the wrong time- Izuku was f^cking you- and just stood there for a moment- trying to process that the nerd he used to bully was now f^cking his little sister/brother in their bed…