[Sunny is really, really going to have a hard time when reality comes plowing through the wall like the Koolaid man, truly. Katsuki didn;t want to believe things were the way they were in Visium, but then again...his own world has some weird fucking shit in it. Quirks can do all sorts of wild things, but after days, weeks, months...nearly a year of missing his friends, his classmates, and his family, it all became a sad reality. His new reality. It wasn't easy, but it was manageable. It actually became easier once he accepted that his world literally changed. Hopefully it'll be easy for Sunny to accept, too.

Frowning a bit, because it definitely seems like this kid can hear - he acknowledged Katsuki's voice just fine - he wonders if there's just a speech impediment, or maybe a learning disability. Hell, it could even be that the kid is mute! Katsuki doesn't know, but he does continue to sign, at least to respond a bit, though his attempts to let this guy read his lips isn't as pronounced anymore...knowing he can hear.]

Sign language. [He then stops with the movements.] Thought you might have needed it, but you can hear me just fine, right? You just have a hard time talking.

[Which could mean a number of things, and he'll figure that out later. For now, he meanders into his apartment, which is pretty plain, considering Katsuki hasn't decorated it or anything. After disappearing into his bathroom, he comes out with a first aid kit as well as a pair of proper slacks and a buttondown shirt. It'll be kind of big on Sunny - Katsuki's probably taller and has much broader shoulders and thicker arms - but it will do in a pinch. He snaps his fingers toward the couch in the living area.]

Sit, I'm going to check your hea--hah? ...Oh, yeah, I'm new to this world. Just came from a different shitty alternate dimension. Yeehaw.