Shiki Tohno sustained a life‑threatening injury as a child, and because of that he was sent away from the Tohno household and raised by a relative. Years later, when Shiki is in high school, the head of the Tohno household, his father, dies, and he is ordered to return by his sister Akiha, the new head of the family. However, Shiki carries a huge secret. Ever since the accident, he has been seeing lines on objects, and only a special pair of glasses can stop him from seeing them. He also cannot remember anything well from before the incident. The day he returns to the Tohno household is the day he encounters a woman named Arcueid Brunstud and decapita…