Niels Matthijs (Onderhond)’s review published on Letterboxd:
Grave of the Fireflies is one of the best anti-war movies out there, even though there's hardly a glimpse of all the fighting involved. Instead, it focuses on the people who are left behind, families torn apart and children turned orphans. There are some agonizing scenes hidden away in this film so it's probably best to avoid showing this to very young children, but anyone else should take the time to sit down and watch this. It's not the ideal film for a fun evening on the couch, but it reaches well beyond the boundaries of traditional animation films and delivers an experience you'll be hard-pressed to find anywhere else.