She is the head of the Horror Movie Research Club.
Her parents operate a traveling haunted house which they dub "The Horror Caravan." Her parents also forced her to watch only horror movies since the age of seven. This made her a genuine horror expert.
Last year she appeared on a TV quiz show featuring horror movies. With her knowledge and remarkable concentration she easily won. She also starred in a horror movie called "Killerman VII - Killerman Goes to Japan," which introduced her to the acting world.
Eriko is 18 years old. When she isn't warned and an enemy appears, she falls off her feet. Her pulse rises slowly while encountering shocking events.