"The year is 2055. Small robots the size of one’s hand called “LBXs” are the world’s greatest hobby, and they affect even the world of business. In this age, they hold an influence so great that a pro league was established around them."
"The LBXs’ battlefield used to be in a futuristic box that could absorb virtually any shock; the reinforced cardboard. Because they fought within the cardboard, they came to be called “Cardboard Warriors."
"Kamui Daimon Comprehensive Academy. The famously regarded sacred ground for all LBX players, and the only training facility available to them in the world." "After fulfilling its demanding entrance requirements, a boy named Sena Arata finally transfers into the school. There, he meets Hoshihara Hikaru, a transfer student like him. With hopes held high, Arata finds that hidden beneath the campus is a huge ~10km wide diorama called the Second World… and that, as a special school rule, world war simulations called “War Time” were being carried out in that diorama."
"Arata and Hikaru were assigned to the 1st Platoon, a team commanded by the class president, Izumo Haruki. In this team, they fight as soldiers for the imaginary country called Jenock."
"What is the unpredictable secret the school is holding? What sort of evil is creeping up behind the boys? The battle connected to a grand future begins now!"
