Challenge to the Underground (E29)

Yuki, a teenage orphan, is called Snow Girl by the locals. She makes enemies of hunters by helping animals escape their traps. She believes her late mother was a mythical figure. When they try to attack her, a giant, hairy monster comes to the girl's rescue. Frightened by the arrival of the SSSP, this monster faces off with Ultraman. As the Snow Girl dies, the monster fades away like a ghost. (Prime Video)