I've always been fascinated by the messed-up potential between these two. A lot of writers lean heavily into the 'forced proximity' trope, like capture scenarios where Himiko holds Izuku somewhere secluded. It creates this intense pressure cooker for dialogue and psychological games.
Another big one is villain Deku AUs, where he either joins the League or strikes out on his own, and Himiko becomes his chaotic partner-in-crime. Those stories often explore a shared sense of being outcasts, but from wildly different angles. I've also seen a few soulmate AUs where their marks are linked in a creepy or bloody way, which feels oddly fitting.
Honestly, the themes usually circle back to obsession and twisted salvation. She sees his blood as beautiful, he sees her life as tragic and worth saving—it's a perfect storm for dark romance. Sometimes it works, sometimes it feels forced, but the dynamic never gets boring.