Welcome to the N.H.K. centers around a 22 year old hikikomori(someone who is reclusive or a loner) who gets aid from a strange girl who seems to know a lot about him, despite never meeting him before. A common theme throughout the story deals with the hardships of life and how people must deal with them in their own way. The main protagonist is Tatsuhiro Sato, a university dropout entering his fourth year of unemployment. He leads a reclusive life as a hikikomori, ultimately coming to the bizarre conclusion that this happened due to some sort of conspiracy. One day just when his life seems entirely unchanging, he meets Misaki Nakahara, a mysterious girl who claims to be able to cure Tatsuhiro of his hikikomori ways. She presents him with a contract basically outlining that once a day they would meet in the evening in a local park where Misaki would lecture to Tatsuhiro in an effort to rid him of his lifestyle. During these outings, many subjects are discussed, though they almost always pertain in some way to psychology or psychoanalysis. One of their first meetings in fact deals with interpreting Tatsuhiro's recent dreams.
-taken from wikipedia

Picture	Real Name	Description
	Tatsuhiro Sato	The story's protagonist, at 22 years old, he has entered his third year of being a hikikomori and is a NEET. One to have psychotic thoughts, he believes that his unemployment and dropout are the works of NHK's conspiracy. He lives in his rented apartment, but depends on his parents for money. Under the influence of his neighbor, Kaoru Yamazaki, he has become a lolicon otaku, and helps Yamazaki on the script of their adult game.
	Misaki Nakahara	A mysterious girl who claims to be a volunteer of a "charity project" to help hikikomori individuals like Tatsuhiro. She has the tendency to lie, but she does not do so to mean any harm. She will tell Tatsuhiro whatever it will take to make him pay attention to her. She seems to have a deep attachment to Tatsuhiro, and has a dramatic personality disorder.
	Kaoru Yamazaki	Tatsuhiro's former kouhai (Junior) in high school, who is an otaku. Tatsuhiro once stood up for him when he was still in middle school being beat up by some bullies, since then, he respected him greatly and decided to join the literature club with him when he went into high school. He is currently Tatsuhiro's neighbor and a college student aspiring to be a game creator.
	Hitomi Kashiwa	Tatsuhiro's senpai in high school, now a public servant. Due to stress, Hitomi develops a dependence on drugs. Hitomi met Tatsuhiro when she persuaded him to join the Literature Club, though most of the time they only ever played card games. She has always been fascinated by the concept of conspiracy theories and is one of the reasons Tatsuhiro suspects the conspiracy against himself by the N.H.K.