Here's one for when they eventually marry, make something up cute or terrible.
Send “📂“ for a random headcanon! || No Longer Accepting
Fujiko (Surprise MHA verse lol)
Had Fujiko developed a quirk, I think her quirk would be something along the lines of being able to conjure thread from anywhere along her body, but she mostly stems it from her finger tips. It'd have varying uses from being strong enough to able to hold down/bind her targets, to weaving nets strong enough to catch several people from a fall to being soft and sleek enough to be used as clothing fabric.
The drawback would be that, depending on how strong the thread would need to be, it'd severely weaken/exhaust her to the point passing out. (And they can't be used through gloves) If she exhausts her quirk too much they'd leave marks on wherever they were used.
She could easily use her quirk to become a hero but she chose to be an independent hero outfit stylist.
Kaori eventually does warm up/loosen up to the people of Desmond's world and family. She never really apologizes for how she acted when they first met, but she shows it through action and showing that she comes to care for the two lovebirds and whatever kids (super powered or not) they have.
Ironically, Fujiko staying with Des in Portland is how she ended up seeing her parents more, as she wants to make sure that she's doing okay in America. Fujiko never really dated anyone in the past before Desmond, but even if she had, he'd be her dad's favorite. I imagine that Des and Kazuya would be so silly with one another, and Kazuya would treat him like the son he never had.