Oreimo

For years, ordinary high-schooler Kousaka Kyousuke has had an icy relationship with his younger sister Kirino, a star athlete who is also a star student.

While being grilled by Kirino over why he hasn't made any progress in the game she ordered him to complete, it occurs to Kyousuke that she needs some friends that she can talk to without concealing her otaku interests.

Kirino finds her first otaku friends at the IRL meet: "Kuroneko" and "Saori Bajeena." They spend their days deep in discussions over their otaku interests. Seeing Kirino this way puts Kyousuke's mind at ease.

One day, Kirino's non-otaku, "public" friends—Aragaki Ayase and Kurusu Nanako—come over to visit. Kyousuke is harshly told by Kirino to not let her friends see him.

On the way home from an enjoyable Summerket. They bump into Aragaki Ayase, Kirino's best friend.

Kyousuke is asked about his relationship with Manami by his friend, Akagi. Akagi is exasperated when Kyousuke answers that, although they don't have a romantic relationship, he doesn't want her to be taken by anyone else.

As Kirino organisings thing with school and friends following her return from America. Kyosuke grows concerned that she might start ignoring him again due to the way he forced her to come back, as well as struggling to find the meaning behind the kiss Ruri gave him when he went to retrieve her. Later, Kirino once again calls upon Kyosuke for life consultation, having him take her to Akihabara to watch a trailer for the next Meruru season before engaging in a long-missed shopping expidition she spent the entire night planning. As thanks for his help, and to celebrate a year of life consultation, Kirino gives one of her eroge purchases to Kyosuke to play.

Feeling frustrated that Kirino is ignoring her in favour of a popular mobile game called Love Touch that lets you exchange texts with virtual girls, Ayase asks Kyosuke to do something about it. After Kyosuke brings it up to Kirino, she gives him Love Touch to avoid being tempted by it, only for Kyosuke to end up becoming addicted himself. As Ayase becomes angered upon learning of this from Manami, Kyosuke attempts to explain how the game's heroine is similar to Ayase. He suggests imitating the heroine to better hold Kirino's interest, but this is soon met with violent backlash from Ayase when dubious phrases are brought up. After Ayase goes to Manami for advice, Kyosuke is shown the error of his ways when Ayase decides to imitate the game's yandere route in front of Kirino.

As Kyosuke, Kirino and Ruri decide to visit Saori's apartment as a surprise for her birthday, they finally see what she looks like without glasses. Four years ago, Saori was a weak bodied girl who was shy about showing her face to others. One evening, she was brought by her older sister, Kaori, to a special apartment where she indulges in otaku activites alongside her flatmates, Shinya Sanada and a budding manga artist named Kanata Yamanashi. Kanata took an instant liking towards Saori and soon taught her about the otaku lifestyle. However, the circle soon starts to dwindle after Kaori left to get married, leaving Saori alone once more. Feeling betrayed by Kaori, Saori became determined to start her own circle and help others like she helped her, receiving her trademark swirly glasses from Kanata to help her on her way. This would eventually lead to the start of her otaku life and her meeting with Kirino and Ruri.

Kirino's track rival from her time in America, Ria Hagry, comes to Japan and stays over at her house. Kirino feels a bit protective of her, often dishing out punishment at Kyosuke following every little misunderstanding. Kirino and Kyosuke take Ria to Akihabara to show her Kirino's various hobbies. Afterwards, Ria challenges Kirino to a race, understanding what drove her to beat her back in America. Although Kyosuke cheers Kirino on, Ria manages to beat her, feeling proud of getting her revenge. Before leaving Japan, Ria hints to Kyosuke that he is the reason Kirino works so hard, though Kyosuke is a bit skeptical of that. After Ria leaves, Kirino brings up an odd request for Kyosuke to be her 'boyfriend'.

Kirino asks Kyosuke to pretend to be her boyfriend whilst they meet with a company director, Misaki Fujima. Misaki wants Kirino to work abroad as one of their exclusive models, forcing Kirino to have Kyosuke to act as her boyfriend as a reason not to leave. As such, they end up going on a 'date' together in order to keep up the act in case Misaki is spying on them, which proves more awkward when Manami sees them together. Whilst stopping at a place to eat, they encounter Kanako and her model acquaintance, Bridget Evans, and are forced to act in front of them too. Things become even more awkward when they encounter Ruri at the arcades. At the end of the day, Kirino becomes disappointed by Kyosuke's behaviour, saying she'll use a 'real boyfriend' next time. After Kyosuke clears things up with Ruri and hears her thoughts, he asks Kirino directly if she has a boyfriend, only to receive a cryptic response.

The boy is introduced to be Kouki Mikagami, a designer from Misaki's company who, to Kirino's surprise, is also an otaku. Later, after Kyosuke explains the 'fake date' scenario to Ayase and asks her opinion on whether Kirino has a boyfriend, things get tense at the after-party when Kirino witnesses Ruri assumedly confessing to Kyosuke. Irritated, Kirino announces that Kouki is her boyfriend, pushing Ruri to leave and angering Kyosuke with her remarks. Later, Kyosuke becomes irritated when Kirino invites Kouki to their house, receiving an angered slap from her when he shows his distaste. After speaking with a drunken Daisuke, Kyosuke grovels before Kirino, explaining his honest feelings and stating he won't allow Kirino to date Kouki until he proves himself worthy. Kirino eventually breaks down and reveals she lied about dating Kouki because she was jealous of Kyosuke and Ruri, with Kouki agreeing to pretend to be her boyfriend.