The huge academy city "Kurata" is formed by the private residence and the super school of thousands of people.ここでは铳を手にした生 apprentice たちの诤いが, daily scenery になっている.その中で、 sandに包まれた「アビドスHigh School」は廃卡の Crisis していた. The situation is as follows: "The policy committee" is a five-person student, "Mr." is a "sir", "Sir" is out of the meeting, and the story is moving and starting.