isn't she too small? Is that some sort of disease?
I don't think you can be that small as an adult without any disease
I mean seriously, just compare her with other girls
The past few chapters doesn't seem to have the same quality as all the others. It feels like its trying to be more serious with their relationship while slapping on half-assed comedy parts when it use to be the other way around before.
It's doable seriously, she can be about 4f8 or whatever the cutoff for being a midget is, I've seen some girls that size before that look good. And he can be 6f5 or so, a giant by Japanese standards but not unknown.