Is "Chirin no Suzu" ("The Bell of Chirin") a good moive or a bad movie?

The movie “Chirin no Suzu” (“The Bell of Chirin”) caught my mind. Therefore, I checked the reputation of the movie around some blogs. I found out pros and cons about the movie. Someone said that it is a trauma movie because it is too cruel for children. Another person said it is just like a Japanese gang movie. A lovely small sheep grew up a wild animal and avenged its parents. On the other hand, someone said it may be an ironical movie but it is also an unforgettable movie. Another said it couldn’t be watched without tear just like me. I may have to agree that the movie is cruel and ironical but I would like to vote the opinion that it is still a good movie. Anyway I will try to watch the movie again for the first time in about thirty years and report the impression about the movie from the viewpoint of adult.