Ep. 15: Toshihiro discovers a mermaid in an aquarium tank who devours him after he attempts to rescue her.

15

Toshihiro enters a special aquarium room and encounters a mermaid submerged in a tank, who also appears to Miyu. He realizes the creature desires to return to the ocean, but the aquarium director opposes this. Ignoring Miyu’s warnings, Toshihiro sneaks into the room and jumps into the tank to save her. Instead of being rescued, the mermaid devours him whole, filling the water with blood. Larva shatters the tank, revealing the mermaid as a shinma named Rin-Koh, whom Miyu banishes into darkness. The director is revealed to have eaten mermaid flesh as a child to gain immortality. She attempted to starve herself to death after witnessing many boys fall victim to the mermaid’s dream. Miyu refuses to put the director into an eternal sleep, noting she already bears the burden of immortality and will eventually die after a century.