Ginî piggu: Manhôru no naka no ningyo 1988

An artist dealing with the grief of his wife leaving him finds solace in painting the squalor of the sewer. He discovers a trapped mermaid, whom he brings home to heal. Her condition worsens, and she asks the artist to paint her before she dies.

Cast:

Shigeru Saiki
The Artist 

Mari Somei
The Mermaid 

Go Riju
Male Neighbor 

Masami Hisamoto
Female Neighbor 

Tsuyoshi Toshishige
 

• Ginî piggu 5
• Guinea Pig 5
• Guinea Pig: Mermaid in the Manhole
• Mermaid in a Manhole