Ep. 5: Towa forces Sawa to consume mermaid flesh before her death and orders the tomb burned

Sawa brings Towa to the mermaid’s tomb to save Mana, while Yuta warns that consuming mermaid flesh causes total transformation into a Deformed One. Towa insists immortality is preferable and attempts to force Sawa to eat the flesh, revealing that Sawa once desired immortality but feared the risk, instead experimenting on Towa. This resulted in Towa’s deformed hand and eternal youth, while Sawa lived a normal life with a family. Towa seeks revenge by forcing Sawa to become an immortal monster, but Sawa dies of a heart attack, thwarting her plans. Towa commands the group to burn the tomb, the house, and herself. Shiina later admits he once asked Towa to elope, but she refused to stay and seek vengeance against her sister. Finally, Mana promises Yuta she would eternally search for him if they were separated.
Episodes
- Ep. 1 · Fifteen-year-old Mana escapes a village of mermaid women with immortal Yuta after learning her fate.
- Ep. 2 · Yuta recalls his past with Rin and the conflict involving Isago on Toba island.
- Ep. 3 · Yuta and Rin return to Sakagami to rescue Rin from the immortal Isago and the poisoned islanders.
- 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.