I finished a silent voice recently and i went to google to find out more and i saw "Should Koe no Katachi have a second movie" and it said it didn't need one.
KOE NO KATACHI ended with no explanation just like tamako love story (love it?) What is supposed to happen to the two are they dating? Are they just friends? And that Ueno fought so many people (no character development)
It needs an OVA or something.