Minatozaki Sana lived her whole 20 years of life quite well. Even with her overprotective guardian and best friend, she was contented and she couldn't ask for a more peaceful life. Who would have thought that peace would end on the night of her 21st birthday? Thrown in the world where she thought could never be possible to exist. The night has come to claim her and Sana could only brace herself for whatever was coming her way.