Ep. 3: Yuta dan Rin kembali ke Sakagami untuk menyelamatkan Rin dari Isago yang abadi dan para penduduk pulau yang keracunan.

Yuta's recollections of his past continue. Yuta and Rin took a fishing boat and captured a mermaid to save Rin's father. However, the Sakagami islanders followed them and after killing both the mermaid and Yuta, they took Rin to Sakagami. When Rin saw Isago there alive, she realized that Isago was immortal. Isago revealed that she has been pregnant for three years by her previous husband, whom the Sakagami islanders killed. She needed mermaid flesh so she could finally give birth. Meanwhile, Yuta revived and returned to save Rin. The chief and his men alternately fought Yuta and Rin while they ate the mermaid flesh. However, many were poisoned by the mermaid flesh and the survivors, including the chief, became Deformed Ones. Isago told the chief that she too was a mermaid and leaped off a cliff into the ocean. Yuta and Rin thought Isago did so in desperation, but Isago changed into her mermaid form and swam away, trailed by two smaller forms. On Toba, Rin's father recovers from his wound without eating mermaid flesh. Back in the present, Mana asks Yuta how far does the ocean go. (Source: Wikipedia)
Episode
- Ep. 1 · Mana yang berusia lima belas tahun melarikan diri dari desa wanita duyung bersama Yuta yang abadi setelah mengetahui takdirnya.
- Ep. 2 · Yuta mengingat masa lalunya bersama Rin dan konflik yang melibatkan Isago di pulau Toba.
- Ep. 3 · Yuta dan Rin kembali ke Sakagami untuk menyelamatkan Rin dari Isago yang abadi dan para penduduk pulau yang keracunan.
- Ep. 4 · Kematian Mana mendorong Yuta untuk mengungkap rahasia gelap Dokter Shiina di Hutan Peri Laut.
- Ep. 5 · Towa memaksa Sawa memakan daging putri duyung sebelum kematiannya dan memerintahkan makam dibakar
- Ep. 6 · Yuta dan Mana bertemu dengan pria misterius berkain kasa setelah jatuh dari tebing.
- Ep. 7 · Yuta mengingat Natsume, seorang gadis abadi yang dihidupkan kembali dengan hati ikan duyung, yang meninggal setelah biksu mengeluarkan hatinya.