K-ON! The Movie
映画けいおん! (original)
The seniors in Sakuragaoka High School's music club live out the graduation trip of their dreams when they celebrate by performing in London.
Starring Aki Toyosaki, Yoko Hikasa, Satomi Sato, Minako Kotobuki, Ayana Taketatsu, Madoka Yonezawa, Chika Fujitou, Asami Sanada, Hideyuki Kanaya, Yuu Asakawa
It's a animation and action & adventure movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Indonesia.