I like the idea that Mia can kind of double as Shioriko's caretaker and vice versa! shioriko's my favorite autistic woman, so i think someone like mia who is more... more.. not that.. goes really well with her. shioriko's someone who's going to remind mia to eat while she's grinding away at her music, scold her when she doesn't take care of herself, mia's someone who's going to explain when something goes over her head. i guess just "they're supportive of each other" lol