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A tiny mountain village in a remote woodland region. Five primary school kids have come together in this idyllic spot in order to spend their summer holidays at a camp. At first the children enjoy carefree days amidst unspoiled nature far away from adult supervision. But their life changes dramatically when they come across what they believe to be a small dog, badly in need of help. The creature – known as Pochi – turns out not to be a dog at all but an alien on an important mission. It seems there is a mysterious substance on earth that is coveted throughout the universe. Pochi had almost found it but was so badly injured during a fight that he had to give up his search. Thanks to the children's help, the alien survives – and decides to reward them generously. “Where would you most like to travel?” is the question Pochi puts to his rescuers. Their answer is prompt, if vague: “As far as possible!” Pochi suggests they try the moon first of all, and so, the alien whisks away the kids to the satellite next door. This marks the beginning of an absolutely amazing adventure. During the course of their travels they discover that the substance coveted throughout the universe is in fact also integral to Japanese cuisine – and it just so happens that one of the kids has some of this mysterious substance in his pocket.

Satou Tatsuhiro, a 22 year old young man, is a NEET (Not in Employment, Education, or Training) and a hikikomori (meaning acute social withdrawal). He believes everything around him is a conspiracy, including the reason why many people, himself included, become hikikomori. Due to this, Satou creates a strange conspiracy theory which includes the Nihon Hikikomori Ky?kai (NHK), a secret organization with the intention of producing a hikikomori filled world. Satou intends to break free from the NHK’s clutches, but cannot, since he finds it too frightening to go outdoors by himself; that is, until he meets Misaki Nakahara, who selects Satou for her “project” that she claims will cure him of his hikikomori ways.

Satou Tatsuhiro, 22 years old, thinks that everything that happens around him is a conspiracy. He even figured out who is behind it all: The NHK, an evil secret company. "When you think anime, you think otaku. When you think otaku, you think people that dislike other people. Those people become hikikomori (people who shut themselves in)". So Satou manages to uncover the plot of The NHK (stands for Nihon Hikikomori Kyokai), after three years of shutting himself in (and rapidly approaching the fourth). In reality, he is nothing more than a NEET (Not in Employment, Education or Training), desperately in need of a cure from that "disease". He wants to break out from the curse, but going out and getting a job is frightening enough for him. That is until he gets selected for a "project"; it is a plan to help hikikomori like him in facing the reality of this world.