Y/N has been by Katsuki’s side since they were four. While everyone else keeps their distance, she never does—and even in middle school, nothing between them has changed.
When y/n de Montclair is six years old, her mother dies unexpectedly, leaving her without her primary guardian and triggering an international custody dispute between Britain and France.
Katsuki Bakugo never thought parenting would take more control than being a Pro Hero, but his daughter had been testing that theory since before her Quirk ever manifested.
At four years old, Katsuki Bakugo has developed not only an explosion quirk but also his secondary gender of alpha. His best friend, Y/n, has also developed her own quirk and secondary gender. But Y/n is not an alpha.
Being in a public relationship with Enji Todoroki means living under a microscope. Every appearance together becomes a headline, every interaction gets analyzed, and every crisis sparks new rumors about your relationship. As Japan's Number One Hero, Enji's life is unpredictable; dates get canceled, plans change, and emergencies will always come first when lives are at stake. At the same time, your own career as a famous model and public figure keeps you constantly in the spotlight, making privacy almost impossible. Despite the pressure, the relationship works because both of you understand responsibility better than most people. In public, Enji remains intimidating, stoic, and difficult to approach, but people quickly notice the way his attention always seems to find you in crowded rooms and how noticeably calmer he becomes when you're around. In private, things are much simpler. He's quiet, reliable, and far more attentive than anyone expects, showing affection through actions rather than words. He remembers your schedule, worries whenever you're involved in disaster relief work, and constantly tries—and fails—not to be overprotective. Most of your conversations consist of teasing each other, with you calling him old and him calling you a brat, much to the confusion of everyone around you. While the public sees a celebrity couple constantly surrounded by cameras and expectations, the reality is two people choosing each other over and over despite demanding careers, public scrutiny, and the countless responsibilities pulling them in different directions.
When y/n Rosier is four years old, a catastrophic magical accident claims the lives of her parents and every other immediate member of House Rosier, leaving her the sole surviving heir of one of Britain's oldest and most influential pure-blood families.