Ep. 8: Yuta and Mana encounter a boy named Nanao who reveals a dark family secret involving his mother.
Yuta and Mana meet Nanao, a 10-year-old boy with a cinerary box who escaped a kidnapping arranged by his grandmother. After healing his wounds, they take him home, where a photograph reveals his mother is not the woman he calls Mother. Nanao's mother opens the box to find the skin of a scarred woman's face. The next day, Mana and Nanao see his mother enter a cellar, but a bandaged woman from the photo emerges. Mana finds surgical tools and the mother's skin inside. Yuta follows the kidnapper, who meets the bandaged woman; she pushes him off a cliff after he overhears them call each other Nanao and Mother. Nanao explains that 25 years ago, his mother ate mermaid flesh, stopping her aging. Eight years ago, she kidnapped his son, also named Nanao.
Episodes
- Ep. 4 · Mana's death leads Yuta to uncover Doctor Shiina's dark secrets in Mermaid's Forest.
- Ep. 5 · Towa forces Sawa to consume mermaid flesh before her death and orders the tomb burned
- Ep. 6 · Yuta and Mana encounter a mysterious bandaged man after falling off a cliff.
- Ep. 7 · Yuta recalls Natsume, an immortal girl resurrected with mermaid liver, who dies after the monk removes her organ.
- Ep. 8 · Yuta and Mana encounter a boy named Nanao who reveals a dark family secret involving his mother.
- Ep. 9 · Mana escapes a scarred woman who replaces her face with Nanao's mother's visage after consuming mermaid flesh.
- Ep. 10 · Yuta and Mana investigate the Kogure family grave and encounter Nae's tragic past.
- Ep. 11 · Sokichi and Yuta flee to Red Valley where Nae dies after revealing Eijiro's past murder and revival plot.
- Ep. 12 · Yuta and Mana encounter Masato, whose mother returns from death after a boat accident.