Gekijouban Ano hi Mita Hana no Namae o Bokutachi wa Mada Shiranai
Ah, I´ve been wanting to watch this movie for a long time, so i´m really glad i could finally do it.
I´m grateful that the movie included lots of new scenes, in fact, more than i expected, because it probably wouldn´t have worked as well if it just were a summary of the show. Even then, I would say it lost some of it´s impact regarding emotional scenes, though it could very well be the case because i watched the anime, though it really didn´t affect it at all, as the added scenes more than make up for any of the missing parts of the show.
So, I´d say the movie was great! but, I would recommend watching the anime first if you want to watch it yourself.