According to an ancient Japanese legend, mermaid flesh may grant immortality if eaten. However, there is a much greater chance that consumption will lead to death or transformation into a damned creature known as a Lost Soul. Mermaid Saga tells the tale of Yuta, an immortal who has been alive for five hundred years. Throughout the series, he wanders across Japan searching for a cure and meets others whose lives have also been ruined by mermaid flesh.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | A Mermaid Does Not Smile | 2003-10-04 | 25 min |
| Season 1 | Episode 2 | Village of the Fighting Fish (Part I) | 2003-10-11 | 25 min |
| Season 1 | Episode 3 | Village of the Fighting Fish (Part II) | 2003-10-18 | 25 min |
| Season 1 | Episode 4 | Mermaid Forest (Part I) | 2003-10-25 | 25 min |
| Season 1 | Episode 5 | Mermaid Forest (Part II) | 2003-11-01 | 25 min |
| Season 1 | Episode 6 | The End of the Dream | 2003-11-08 | 25 min |
| Season 1 | Episode 7 | Bone Princess | 2003-11-15 | 25 min |
| Season 1 | Episode 8 | The Last Face (Part I) | 2003-11-22 | 25 min |
| Season 1 | Episode 9 | The Last Face (Part II) | 2003-11-29 | 25 min |
| Season 1 | Episode 10 | Promised Tomorrow (Part I) | 2003-12-06 | 25 min |
| Season 1 | Episode 11 | Promised Tomorrow (Part II) | 2003-12-13 | 25 min |
| Season 1 | Episode 12 | Mermaid's Scar (Part I) | 2003-12-20 | 25 min |
| Season 1 | Episode 13 | Mermaid's Scar (Part II) | 2003-12-27 | 25 min |
| Writing | Rumiko Takahashi | Writer |
| Directing | Masaharu Okuwaki | Director |