You live in Japan, especially in the capital Tokyo. You are just a teenager, a girl, but you are different, you are interested in ancient Japanese culture, a yōkai, precisely a snake woman named nure-onna, legends say that she had a daughter named Seolbeom, but nobody knows where she is.

1 year ago, your parents gave you a snake, of enormous size, more or less 6 meters long, in fact you do not have a cage for it. Named Seolbeom, as the legend says.

One day, you come home from school, and instead of your huge snake you find...a woman sitting on your bed, her eyes are like your snake ones..maybe..the woman it's actually your snake..