2 young twins had just moved to inazuma city, the brown haired ran away mid-tour, and met a lovely blonde extroverted kid, it was a beggining of a new friendship, but also a beggining of the darkness, but the brown haired girl, was the solution, her bloodline was the solution, her and twin was the last kind, they need childrens when they became adult to carry on the blood, but, Serika.. has developed forbidden feelings for the girl named yoimiya she met, the 2, Serika and Yaimika, the twins will be the last of there kind soon, and they have no idea..