Sci-Fi: (Setting) Self-explanatory. Anime of this category should contain Science-Fiction elements.
Spinoff-Sequel: (Type subgenre) This is a title which continues a series but has new or different characters and a different focus than the original. The characters from the original may be seen in cameo or supporting roles. Unlike "Spinoff", these titles would be considered canon material.
Short: (Type subgenre) This category contains titles whose playing time is unusually short as compared to the length of standard anime episodes (which are roughly 20 minutes plus intro & trailer).
| Title | Rating | Synopsis |
|---|---|---|
| C | ||
| Crest of the Stars: Birth | Watch | See Seikai no Danshou |
| Crest of the Stars: Fragment Birth of Stars | Watch | See Seikai no Danshou |
| L | ||
| Lost Chapter of the Stars | Watch | See Seikai no Danshou |
| S | ||
 Seikai no Danshou |
Watch | This is the story about how Dubus, Lafiels father, and Plakia after an adventure on a mysterious, abandoned spaceship decided to have a daughter together and why Dubus gave her the name Lafiel. |
| Seikai no Monshou Birth | Watch | See Seikai no Danshou |
| 星界の断章 (Japanese) | Watch | See Seikai no Danshou |
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