Seen everything by Tōya Satō?
If you've already watched everything Tōya Satō directed, here are 12 films from other directors that share the orbit of Grave of the Fireflies — the catalog's mood-cluster and similarity-graph neighbours, filtered to exclude Tōya Satō's own filmography. Where to go next. (Also: Tōya Satō's full filmography · where to start with Tōya Satō.)
Kagemusha
foreign gemepicslow burn
Yi Yi
foreign gembittersweetcerebral
Nobody Knows
foreign gemgut punchoutsider
The Human Condition I: No Greater Love
foreign gemepicraw
The Human Condition II: Road to Eternity
foreign gemdreadgut punch
Tokyo Twilight
foreign gembittersweettender
The Story of the Last Chrysanthemum
foreign gemcerebralbittersweet