__Height:__ 176 cm (5'9") 

The story's protagonist is a 22-year-old hikikomori and NEET of nearly four years. He is highly unstable, easily manipulated, obsessive, and often blames the N.H.K. conspiracy, a fabrication of his mind, for his shortcomings. He lives in a rented apartment, but depends on his parents' allowance to live.   ~!At the end of the novel, Satou and Misaki promised each other to get married once they finish school.!~

Satou’s life – or what’s left of it – is a paranoid mess of conspiracy theories and social anxieties. He’s terrified of the outside world; his apartment is overflowing with the remnants of cheap take-out food; and his retinas have been permanently scarred by a steady diet of internet porn. But maybe it’s not all his fault. After all, the nefarious N-H-K is out there, and they’re determined to turn society’s fringe-dwellers into a brainwashed lot of jobless, hopeless, futureless recluses. 
 
Enter Misaki – a mysterious girl-next-door type who is Satou’s last chance to beat down his inner demons and venture out into the light of day. She’s ready to help him overcome his crippling phobias, but Satou would rather cower in his existential foxhole and pretend to work on the demo for his virtual sex game. 
 
He’s afraid to face the world. She’s strangely desperate to fix a total stranger. Maybe together they can be normal. 
 
(Source: Funimation)

He claims to enjoy playing crazy or insane characters; Greed (Fullmetal Alchemist) and Asura (Soul Eater) being some of his favorites.

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Sato Tatsuhiro is a drug-addled "hikikomori" (a Japanese shut-in) who thinks a sinister organization, NHK (Nihon Hikikomori Kyoukai), is the cause of all his problems! He falls in love with a girl, Misaki, who he thinks is trying to assassinate him, but doesn't know how to talk to her or if he can trust her. The more he stay in his house watching anime porn, reading manga and doing drugs, the harder it is for him to leave. Only Misaki can keep him from rotting away in his own apartment! 
(Source: Tokyopop)

Tatsuhiro Satou, 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.
 
Note: Includes one extra chapter.