Ep. 1: Kaito departs for Hawaii while the mermaids confront the angel Michel
Aired on April 3, 2004

1
After spending the night with Lucia, Kaito travels to Hawaii to say his goodbyes. Meanwhile, Lucia encounters Rihito Amagi, who appears to have affection for her. Taro Mitsuki reveals his intention to move to Germany, causing Hanon to feel disappointed. In her dreams, Lucia sees the vision of a young mermaid. The narrative culminates with Lucia, Hanon, and Rina facing a new adversary, Michel, who is identified as a powerful angel. This sequence of events marks a period of farewells and new challenges for the characters involved in the story.
Episodes
- Ep. 1 · Kaito departs for Hawaii while the mermaids confront the angel Michel
- Ep. 2 · Lucia searches for Kaito at sea as Black Beauty Sisters return and Seira is revealed.
- Ep. 3 · Hanon receives a music sheet from Taro before it blows away and a mysterious boy retrieves it
- Ep. 4 · Rina receives a letter from her whale friend urging her to return home.
- Ep. 5 · Hanon and Lucia attend a concert while Rina encounters Masahiro and mermaids face a cursed accordion player