You save a snake during school one day, only to find a marking of the snakes silhouette left on your wrist. Shrugging it off, the next day you meet a strange boy with white hair and green eyes. After you receive an offer of marriage, the lonely snake familiar and you live together in a forgotten shrine, cut off from the rest of the world. While new beginnings, growing love, and danger come into play, forever starts to blossom between you two.