We propose a five-episode arc within a hypothetical Power Rangers: Ronin season (based on Shuriken Sentai Ninninger but Westernized). In this arc, the villain (a fallen Gold Ranger) severs the Sanzu River’s flow, causing the dead to return as vengeful Gaki (hungry ghosts)—including past Rangers.
The river is a clever adaptation of Japanese Buddhist mythology, where it represents the boundary between the living and the dead—similar to the River Styx in Greek lore. In the series, it is located in the and is composed literally of the tears and despair of humans . This creates a unique "feedback loop" for the villains: the more they terrorize humanity, the higher the water level rises, eventually allowing their leader, Master Xandred , to escape his exile and flood the Earth with poisonous water. Atmosphere & Visual Impact sanzu river power rangers