Regarding the panties, isn’t Cinderella his un-related sister? Oh wait, wrong manga.
I agree that it’s pointless to dwell much on the details in this manga — unless you want to do it for kicks. Logically, the Rule of Mediocrity would say that the she’s not unique, even if unusual. So you would...
Those hand creatures have to be an homage to Kurt Vonnegut. Actually I like this two-handed version better tam Vonnegut’s. (Look for Tralfamadorian if you haven’t read Slaughterhouse Five — something I’ve yet to finish.)
Introducing a bath house as a regular feature and still getting character development: prize-worthy literature.
I bet those bath houses are having it rough during this pandemic. But, I sure would like a chance to do physical work like that — can’t go to the gym, you know.