Well then! It's hardly objective, but I'd say Rio is one of the more beautiful girls to ever enter Morning Musume, at least at debut stage.
Her demeanor is pretty cool and confident. She said she's good at singing, so I have high hopes for that as well.
Also apparently plays golf, there was already some banter between her and Eripon although Fukumura (who was being a huge troll for the entire stream lmao) was probably egging them on.