Kōryō Academy is a school for students who has Blaze, a soul's power to create a weapon. However, Thor's Blaze is irregular. It creates a shield instead of a weapon. The academy uses a special Duo system, at which students forming pairs and living together. Thor ended up being Julie's partner, and it's uncommon for a boy and girl sharing a room together.
Sakamoto Ryota is an unemployed 22 year old who lives with his mother and spends his days doing nothing but playing video games. In the real world, there may be nothing special about him, but online, he's one of the world's top players of the combat game called Btooom. One day, he awakes on what appears to be a tropical island, though he has no memory of how he got there or why. While exploring the island, Ryota runs into a mysterious being who attacks him by throwing a strange looking bomb at him. Ryota then realizes that both his life is in danger, and that he has somehow become trapped in a real-life version of his favorite game. Ryota and the other "players" must now survive through the nightmare to figure out the reason why they ended up in the game in the first place.
The story takes place in Huanli (the Year of Dazzling) 3015. Donatia and Kouran, two countries fighting for supremacy, are causing the world to be torn apart due to the constant war. Amidst the strife is the island country Nil Kamui, which has lost its independence. Red Dragon, the guardian god of Nil Kamui, goes out of control. Will the island country be able to regain its independence?
Shido Itsuka, who used to be a normal high school student at Raizen High, meets the first Spirit, Tohka, and awakens his power to “seal the Spirit's power”. Though they may be feared and hated beings due to their immense power, Spirits were always alone and knew only combat and death. Shido, the only one in the world with the power to seal the Spirits' might, hurls himself into life-threatening dates with the beautiful Spirits in order to save them.
Aoba lives on Hekishima, a small island to the southwest of the main islands of Japan. He lives with his grandmother Tae while working part time at a junk shop. The popular pastimes on the island are the ongoing turf war called "Libstease" and an online game set in the virtual world of "Rhyme." Aoba isn't involved in either, preferring to live peacefully, until one day he is forced into a Rhyme battle.
Takeru continues his education at Tenbi Academy as part of the newly formed Security Committee. As a team with the other members they battle unscrupulous individuals who use their Maken for evil purposes. In the meantime, his libido and the conflicting romantic interests of the girls surrounding him complicate matters considerably.
In an age when large-scale natural disasters frequently happen all over the world, when cyborgs and autonomous robots are beginning to appear on the market in technologically advanced nations, and major world powers compete for technology and resources, the divide between rich and poor grows and the future for the poor looks bleak. In this transitional stage, everyone wanders around in a self-indulgent daze and the way out isn't clear… This is the story of how two cybernetically enhanced girls meet.
In the remote Southern Cross island, a secret organization named The Glittering Crux plans to reactivate giant mobile suits that have been sealed for ages. Known as cybodies, they can only be controlled by pilots identified as star drivers. To unleash their full power, the mysterious group must brake the seals of the four shrine maidens that reside in the isle. Recently arrived outsider Takuto Tsunashi vows to stop the Glittering Crux in order to protect Wako Agemaki, girl who saved his life and is one of the four maidens. Wako is a lively young lady who has already been betrothed to Sugata Shindou, a rich and talented childhood friend. Despite being very close to Agemaki, Sugata quietly disapproves this engagement since it was forced on to them due to a family tradition. The melancholic couple becomes a radiant trio as Takuto becomes not only their friend, but protector of the seals since he is none other than the Galactic Pretty Boy, gifted star driver of Tauburn, the 22nd cybody.
In Oshima the happy, carefree 14-year-old Akane Isshiki lived a poor but well-loved life together with her reliable little sister, Momo, who does all the housework, and her grandfather, Kenjirō, a genius inventor who only created useless devices. When the weather is clear, they can see the artificial island, Blue Island, across the sea. In the center of that island rises the revolutionary Manifestation Engine, a discovery that solved the world's energy problems, and leads to some major problems.