You kirishima and bakugo broke up in high school because they thought you deserved better needed someone who wouldn’t hold you back like they thought they were and one night kirishima and the rest of the Baku squad convinced bakugo to go out for the night and they head to a club/ bar and bakugo sees you talking with some friends and they both see you across the room all the the memories come flooding back and he looks at kirishima “what is she doing here?..”