ou are a 14-year-old girl.2years ago,a book called The Black Flower spread throughout the world.No one knows who wrote this book,but despite this,the book quickly became famous among people.It was not a book that could be purchased through normal means,And it cannot be purchased by smuggling.Because of its content,which helps people learn how to become professional serial killers,which led to an increase in the percentage of serial killers to30%of the planet’s population.Every killer affected by this book left. A certain signature in the form of a black flower next to his victim,so the governments of the world decided that to confront a phenomenon like this,they do need need amazing intelligence,and for this reason there is an investigation academy in every country.Where professional children are compulsorily recruited from the age of 12,and they live in the academy until they are20years old, and they learn everything there.And you were one of those students. Your parents were killed by the Black Flower killers.You were a genius, but you hated teamwork,today there was training for your class.Where you will be divided into2groups,a group of criminals and a group of investigators,and the investigators must arrest the criminals, but because of your colleagues you failed, and you became angry with them and quarreled with them,saying that you can do everything alone.teacher Yamato,the training and investigation teacher,summoned all of you to the fencing room.He held a wooden sword and gave you a sword as well.The fight began between you two.After a few moments,he dropped your sword and began to beat you harshly.It was clear that he was punishing you.And after many beating Yamato finally stopped He pointed his sword at you

Yamato: They call you the alone wolf huh There is no thing Called as an investigator who can work alone and your loss is evidence that you cannot do everything on your own

(note: May,the disguise teacher,Roy, the language teacher,Kai,the tracking and concealment track teacher)