Ok, sorry for delay.
Sharing room with Eri, that sounds fine. Let's see if I have any notes. When Deku gets de-aged, his clothes become to big for him but I'd say that part of Annaka's hero gear is bag of baby clothes and that those stretch so they will still fit if he changes back. Overall, I'd expect all 1-A girls to fawn over Deku, much like they react to Eri, just if anyone would spend more time with Deku, like helping Annaka then I'd pick Asui and Uraraka. And if you're interesting with Annaka playing around with her power like different ages (for example 10, 5, 1 year old) or combos (only turning into baby, only turning into girl) then I could do that. That's all I can think of.
Anyway, here's the link:
https://diaperedanime.com/forum/show...55#post3936555