According to the theories of oneiromancy, dreams of dragons represent the struggle of losing yourself to your own anger. Fittingly, Souya Kuroi wakes up from a nightmare of a massive dragon destroying everything around him in a blaze of rainbow colored light. After being told that he lost his parents and memory in a strange accident, the waking world becomes another nightmare in itself. With this dream being his only memory, he has no choice but to be taken care of by his two strange guardians: the spunky and energetic maid Ginko, and a huge cat known only as "Sensei." His new life is turned upside down when the denizens of Saromisaka City are beset by a teddy bear-shaped UFO. When military power proves to be ineffective, seven mysterious people rise up to fight off the monstrosity. These heroes destroy the invader in a flurry of rainbow colored lights, the very same lights that Souya saw in his nightmare. With the alien threat repelled, these seven strangers find themselves facing a new adversary: Souya. Swearing vengeance upon the people who decimated his old life, he begins his crusade against these "heroes" and becomes embroiled in a struggle of galactic proportions. [Written by MAL Rewrite]

Mature grade school student Arisu Tachibana is an aspiring idol who receives an invitation from her company president to participate in the Third Entertainment Section—a new idol project. Arisu and eight other young girls soon meet their producer before beginning idol-related activities. To the girls' surprise, their producer appears to be a childlike adult and nothing like what they had imagined. The producer, who is taking on the position for the first time, also had no idea that he would be meeting a group of short, young idols. The awkward situation leaves Arisu disappointed, and she wishes for a producer change. However, the producer, with his genuine love for idols and his desire to see them shine, will not let this opportunity pass and expresses that he is serious about working with the girls. Thankfully, the young idols accept the producer after seeing his unwavering passion for idols, serving as the start of their journey to the stage of dreams.

In search for Araki Genzo, George Kodama finds himself in the small town of Kimujuku. George quickly realizes that he is unwelcome and is warned to leave as soon as possible. With two rival syndicates roaming the streets and a dark violent past, the town of Kimujuku isn't what it appears to be. George challenges the town of Kimujuku in order to reveal the towns dark hidden past and discover the truth.

Kyuu is your average boy with a knack for logic and reasoning. Desiring to become a detective, he finds out about the existence of the Dan Detective School (DDS); a famed school where students are allowed to bear arms. Together with Megu, a girl with photographic memory, the martial arts master Kinta, the genius programmer Kazuma and the mysterious Ryuu, Kyuu tackles many well planned out crimes, always seeking the truth.