Tokyo's Underground world is a mysterious realm beneath the Japanese capital. Here, Elemental Users possess the power to control elements like Fire, Water, Lightning, Magnetism, Freeze, and others. This enigmatic world is inhabited by these users. Rumina Asagi and Ginnosuke Isuzu are two ordinary freshmen living in Tokyo. However, their lives take an exciting turn when they come across Chelsea Rorec, a Gravity User, and Ruri Sarasa, the Miko of Life, leading them on an adventure.