>>132920280I have HFA and I agree that it's pretty clear Renge is intended to be a depiction of it. It's hard to make sense of the really specific symptoms of it that are shown otherwise.
Repeat episode 10 did a decent job of clarifying this beyond doubt. Renge can't figure out the disappearing thumb trick (which most kids would just shrug off) but she figures out multiplication after someone just explains it to her one time.
Add to that her obsession with items and objects, wanting to dress up as a Teru-Teru Bozou, getting furious at Hikage for wanting to look at her art, her love of wildlife and animals.
The best example is when you see her playing with Honoka in episode 4, where even Honoka seems to realize that something's a little off about Renge. Like the time when Renge is watching her take pictures and then Honoka looks at her and realizes she's jealous, so offers to let her try the camera out a little. Renge of course goes overboard and starts yammering on about not having good enough lighting.
Actually it makes me wonder if I was as cute as Renge at her age. Maybe?