All the events of the novel take place in the Academy City on water which is called Rikka. This city is also known as Asterisk and it is glorious by being the world’s biggest stage for the integrated fighting entertainment. Several young people who belong to the six academies take a fancy for struggling for supremacy with Shining Armaments in their hands. Amagiri Ayato is among these brave people.
Ayato came in Rikka because the Student Council President of the Seidoukan Academy has sent an invitation to him. And then he incurred Julie’s wrath and finally he managed to battle with her.