Set in modern-day Japan, where Kyoto has become the capital, the story unfolds as boys and girls awaken as "eligibles" and travel to the other world of Xanadu. Kamiya Rei, a boy who gained the power to fight monsters in the otherworldly labyrinth Xanadu, transfers to "Hirasaka Academy", which aims to conquer Xanadu. Alongside his unique companions, Rei will challenge Xanadu... ...