Episode 01
Shadow of the Moon, Sea of the Shadow Chapter One |
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| Japanese Term | English Meaning | Time Introduced | Definition |
| Hinman (賓満) |
Guest + Pride | 18:48 | A blue liquid type creature. It is able to control the body of a human. |
| Sekishi (赤子) |
Crimson Child | 1:46 | Sekishi is a name given to Youko in her dreams. |
| Shoku (蝕) |
Eclipse | 22:11 | A yellowish portal that connects Japan and the world of the 12 Kingdoms. It usually connects at the sea. |
| Suiguutou (水禺刀) |
Water Sword of the Long-tailed Monkey | 18:39 | The name of the sword given to Youko by Keiki. It is the only thing able to slay the Koucho. Apparently, only Youko is able to wield it. |
| Taiho (台輔) |
Pedestal + Help | 11:23 | Keiki’s title. |
| Tsuki no Kage, Kage no Umi (月の影 影の海) |
Shadow of the Moon, Sea of the Shadow | 1:35 | The name of the first arc of the series. |

