>>22744358in japan NTR is a hilarious comedic meme and not a "touchy creepy fetish" like in the west
Mito is easily the most, if not the most "one of us" chuuba in japan, her audience is like 99.99% japanese too, she is the most unhinged relatable chuuba over there, her humor is also far away from random either, its always connected to something she did a couple of live streams ago, then she will just re-enact the joke in a clip to remind people of the stream too.
tl;dr all you need to understand mito is to know japanese and watch her streams, there is no hidden meaning behind her stuff.