This could be interesting, but i personally don't like this spin-off. Mainly because its so different from the source. I would prefer if it was its own separate story with its own characters. Again this could be a really good if it was a separate thing to its self and not a spin-off. you could have the main goal and personality traits, and also have a character like Tadano that supports her and tries to help her reach her goal of "making a hundred friends" and overcome her speech problem, and also help her cope with what the others do and say to her along the way.