Welcome to the N-H-K

The story centers on Hideki Nishimura, a young man who confessed to a person he thought was a girl online, only for that person to turn out to be a boy. He keeps this "black history" secret and swears to never to trust a "girl" online again. However, one day a girl online confesses to him, and it turns out she's actually a beautiful girl named Ako Tamaki. Ako cannot tell the difference between the online world and reality, and she is a loner who has trouble communicating. Hideki and his friends from his guild decide to work together to "correct" her.

So is this what it means to have roommates now?! Office worker Rinko, 24, lives alone and is secretly an otaku. One day, her apartment gets connected to the two neighboring rooms through a "hole" in the wall. In the room on the left is a fresh-faced yet mysterious guy who is overly-sweet to Rinko. The room on the right is occupied by a guy with violent tendences who is similarly mysterious... But wait! "I... I think I know him!" Rinko's only source of solitude, her apartment, has been turned upside down. Now, every day is full of heart-pounding surprises!

At the tender age of 15, Tomoko Kuroki has already dated hundreds of boys — or at least in dating games she has. The sad truth is that she gets tongue-tied just talking to people, which makes her entrance into the social pressure cooker of high school especially odious and riddled with anxiety. Can Tomoko overcome her crippling social anxiety and finally have the popular high school life she’s always dreamed of? Or will she merely get caught in the downward spiral that is her awkward life?

Having slept through all four of her alarms, the energetic Narumi Momose finds herself running late for her first day of work at a new office. As she races to catch her train, she makes a promise to herself that none of her coworkers will find out about her dark secret: that she is an otaku and a fujoshi. Her plan goes instantly awry, though, when she runs into Hirotaka Nifuji, an old friend from middle school. Although she tries to keep her secret by inviting him out for drinks after work, her cover is blown when he casually asks her whether or not she will be attending the upcoming Summer Comiket. Luckily for her, the only witnesses—Hanako Koyanagi and Tarou Kabakura—are otaku as well. Later that night, the pair go out for drinks so that they can catch up after all the years apart. After Narumi complains about her previous boyfriend breaking up with her because he refused to date a fujoshi, Hirotaka suggests that she try dating a fellow otaku, specifically himself. He makes a solemn promise to always be there for her, to support her, and to help her farm for rare drops in Monster Hunter. Blown away by the proposal, Narumi agrees immediately. Thus the two otaku start dating, and their adorably awkward romance begins.