14 year old Kimigawa Kento lives separated from his stepfather after his mothers death. A woman visits with a will sayings it's from his biological... more>> father. He refuses the will and she tells him the inheritance is approximately 1 trillion yen. He still doesn't want it and threatened with his friends family's jobs at the line he agrees to meet his relatives. But all isn't as it seems. When he arrives at the house they are attacked. And he finds out the true meaning of the will. <<less

Many years ago, an ancient civilization once ruled Earth. They were known for advanced artifacts and machines, but were destroyed in the end due to the misuse of their creations. Creating indestructible message plates written in Hebrew, these people left messages for later generations, informing them that if they could not find a good use for their creations, they should be destroyed.... more>>

Various entities such as paramilitaries, national armies and armed private forces began to secretly search for these "mysterious" artifacts in order to be used for their own good and against their enemies after the end of the Cold War. Only the ARCAM Corporation can stop these forces from destroying themselves with these "advanced" machines. With the help of its military arm, the ARCAM Private Army and their elite secret agents known as Spriggans (or Strikers), ARCAM plans to turn the tides of battle against those who would threaten the safety of humanity by using the dangerous artifacts. <<less

A Japanese police officer named Kyo Kugayama and Kyo Hoshina, a 12-year old genius with an IQ of 250, embark on a quest to investigate... more>> a person known as the Professor. Nothing is known about him, except he is said to be a genius like Hoshina and said to be linked to multiple bombing attacks in Japan when Hoshina was recalled from the US to assist the National Police Agency in their investigation of the bombing cases. <<less