Takeshi's friend tells him a rumor about a ghost that wanders, looking for a collar. When he gets home, he finds an old collar there! That night, the ghost of a young girl appears before him, and he learns that the ghost is looking for her dog, Shiro, who she lost during a bombing raid during the war.

Pochi appears in front of Tama wearing a strange, old collar. Pochi seems different than usual, so Tama follows him and ends up in a field he's never seen before. There, Tama learns that Pochi's been possessed by the ghost of a dog named Shiro who'd lost his life in the war.
The Legend of Devil Pochi
أسطورة بوتشي الشرّير
Die Legende von Devil Pochi
La leyenda del diablo Pochi
La leggenda del Pochi Oscuro
A lenda do Pochi do Mal
Легенда о дьявольском Поти