ダンボール戦機 Ｗ

A year after the Innovators were stopped, Ban Yamano is still building LBX, the palm-sized battle robots that fight inside cardboard arenas, when a group calling itself the Detectors starts using them as weapons. Ban goes back into the field with Hiro Oozora and Ran Hanasaki alongside the friends he already had, put there by Jin Kaidou. This second television season carries on directly from the first, so it opens on a world that already treats LBX as ordinary equipment.