Okay, cool! ^^
I'm perfectly fine with it being teasing or humiliating~ Some pairings that I can see working pretty well for that particular scenario, are: Shoto/Katsuki (Yes, in this case I see Shoto being the caregiver. XD), Dabi/Keigo, Dabi/Tomura, Endeavor/Keigo, Fumikage/ Katsuki or Keigo.
Tell me which one you prefer, and I'll let you know what plot I have in mind for it.