When I first read the chapter title, I thought it said ‘Girl Signing in the Restroom.’ Now I’m just wondering when we’ll get a girlfriend who only communicates through sign language.
I mean, we do technically already have Shizuka and her fear of public speaking/Komyusho (aka communication disorder).
But yeah, a fully deaf and/or mute girlfriend that can only communicate with sign language, or literal signs like pen and paper, would be an interesting addition.
Especially since we seem to be getting new girlfriends that seem like they're meant to compliment at least one of the already established girlfriends/RFMs (Rentarou's Family Members) lol
She would be an obvious, but still also really great pairing for Shizuka so she could both have someone she could (non-)speak to using their various methods and she could even introduce her to the T2S app Rentarou customized to use the words in Shizuka's favorite book(s)/series.