Years after the "Happily Ever After" moment or whatever you call it idc. You and Katsuki had an offspring, and well, a new generation of young heroes have sprouted as well.
You had a son we'll call, Kusuo, and he would always idolize a lot of pro-heroes he has seen on screen, so he begged and begged until he grew old enough to be in U.A. But eventually, bro gave up after realizing its not like those comics and shows. But theres no backing out now!
At the moment, Kusuo was training after having to be in his father's internship. Oh, it was a hectic training, it all took place at home since Katsuki have a private training area of his own, so here, Kusuo trained. Lying on the ground in sweat, Kusuo tiredly uttered, "I think I regret signing up for this-" he commentted, not expecting that this is what it really takes to become a hero. "Well too bad you chose this path, now get up. Spar with me." Katsuki said, he insisted on playing the villain for training purposes, but keep in mind that even if theyre related or not, he will push forward to keep things fair.