This is a story about..uhh..ok so it's basically what the title says,the main character named Ino Ito has a bunch of secrets about her family that she doesn't know,after her mother died when she was a kid then she didn't know what she meant in till she turned sixteen,she remembered her mother's last words and decided to find out the secrets behind the Ito family and find out who's killing some of the students at her school