Seen everything by Shinya Nakajima?
If you've already watched everything Shinya Nakajima directed, here are 12 films from other directors that share the orbit of Ultraman Zearth — the catalog's mood-cluster and similarity-graph neighbours, filtered to exclude Shinya Nakajima's own filmography. Where to go next. (Also: Shinya Nakajima's full filmography · where to start with Shinya Nakajima.)
Ultraman Tiga & Ultraman Dyna & Ultraman Gaia: The Battle in Hyperspace
Mega Monster Battle: Ultra Galaxy Legends The Movie
Ultraman Zero: The Revenge of Belial
Ultraman Tiga & Ultraman Dyna: Warriors of the Star of Light
Ultraman Saga
Macross Plus: The Movie
Ultraman R/B The Movie: Select! The Crystal of Bond
Doraemon: Nobita and the Galaxy Super-express
Doraemon: Nobita and the Tin Labyrinth
Doraemon: Nobita and the Kingdom of Clouds
Doraemon: Nobita's Three Visionary Swordsmen
Doraemon: Nobita's Diary on the Creation of the World