The story of two girls who have been together in all things since they were children. Yukari has always been the type who wanted to do everything her best friend Haru did. It's unclear whether she acts out of envy, love, or madness, but her feelings become a darkness that leads to a tragic fate.

A high school girl is heartbroken after her boyfriend left her for her best friend. She's still in shock when she stumbles upon a book of incantations. One incantation in its pages sucks her into a whirlpool of terror.