Six young women, including Katsuki Takahashi, hold a high school reunion, but their high school has been shut down. The women are happy to see each other again. Suddenly, a shot rings out and one person dies. They receive a text message from Natumi Shirakawa who died 7 years ago. The text message asks "who is the criminal?" To figure out the identity of the perpetrator they look back at what happened 7 years ago.

Girl's High School

In the 15th century, Vlad III, king of Wallachia, was in deep despair after his beloved queen was killed in battle. He cursed God and vowed to live forever in the darkness to take revenge on the world.  In the 19th century, Jonathan Harker, a novice lawyer, is asked by a Romanian aristocrat to help him buy a property in London. The aristocrat, who calls himself "Count Dracula," has an eerie aura about him, but also a mysterious charm that captures people's hearts. However, Harker soon learns that Count Dracula is actually a terrifying immortal vampire. After discovering the Count's true purpose, he and his friends rise up to stop it.