His destiny has finally arrived as the young Shirou Kamui returns to Tokyo after 6 years. A powerful psychic, Kamui vows to protect the happiness of his childhood friends Fuuma and Kotori, even if it means avoiding them. But fate is cruel, whether or not Kamui wants to be involved; he holds the future of the world in his hands, given the choice of becoming a Dragon of Heaven or a Dragon of Earth. The Seven Seals gather, and so do the Seven Angels; all individuals who have their destiny carved out as one who would battle for the fate of the world. What future will Kamui choose to become reality?

In an unplanned field trip, Riko is transported to an alternate Japan where metal-based life forms known as Mimesis ravage the world. Only girls equipped with LBX armored weaponry can stand up to this scourge. Joined by four other displaced young women, Riko will have to adapt to save humanity. The hope of a planet now rests on these heavy metal soldiers who desire one wish—to return home again!

takes place during a sweltering midsummer day when Ozu, the protagonist's "terrible friend," accidentally drowns the only remote control for the air conditioning unit in their apartment. While they discuss their predicament with Akashi, the protagonist's raven-haired love interest, a sloppily-dressed time-travelling student arrives from 25 years in the future, prompting the protagonist to borrow his time machine in an effort to snatch the remote control from the past before it breaks.

The story follows a boy named Quon and others who suddenly wake up with supernatural powers.