Shoot the Invader (E02)

Fuji and Hoshino investigate strange sounds and movement from the well of Odawara Castle. According to folklore, 500 years ago a samurai drove a rampaging monster, Neronga, underground. The monster fed off the energy of hydroelectric power plants, growing to enormous proportions. The SSSP establishes a pattern of the creature's attacks, and sorties to the locations to stop its next assault. (Prime Video)