Spinoff: (Type subgenre) These titles have their roots in an original title but have nothing to do with the original story. It could be a re-telling of the original story or use the same characters but in a different way. Unlike "Spinoff-Sequel", these titles would be considered non-canon material.
Sci-Fi: (Setting) Self-explanatory. Anime of this category should contain Science-Fiction elements.
| 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 |
| T | ||
 To Heart 2 |
Watch | Following her graduation from middle school, Yuzuhara Konomi enters the same high school as Kono Takaaki, her childhood friend, did one year earlier. As the new school year begins, they meet their childhood friend Kosaka Tamaki, as well as many new acquaintances. Unbeknownst to the group, their encounters with each other will soon lead to many memorable adventures. |
| ToHeart2 | Watch | See To Heart 2 |
| 星界の断章 (Japanese) | Watch | See Seikai no Danshou |
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