Ore no Imouto ga Konna ni Kawaii Wake ga Nai - Episode Guide

Kirino tries to connect with fellow otaku without revealing her identity, leading her and Kyousuke to explore Akihabara and attend a meetup. They experience new social situations, face misunderstandings, and begin to open up about their interests.

Kirino spends time with classmates and family, navigating her secret hobby and dealing with her father's disapproval. She bonds with Kuroneko and friends in Akihabara, while Kyousuke tries to support her and confronts their father about her interests. Despite tensions, Kyousuke's efforts help soften his father's view, and Kirino expresses her gratitude, revealing a closer sibling bond.

One morning, Kyosuke is surprised to find Kirino behaving politely to him. That evening, while Kyosuke worries about whether she is forcing an act in front of everyone, Kirino uses her final life counseling session to ask Kyosuke to buy her an eroge that is launching at midnight in Akihabara. As Kyosuke gets in line, he runs into his classmate, Kouhei Akagi, who is buying a yaoi eroge for his own sister. Meanwhile, Kuroneko calls Kirino about the cat ears she is making for her and also tells Kirino that she might be going to change "her way of calling" Kyosuke. After Kyosuke gets back home with the game, Kirino asks him to play with her. Later that night, Kyosuke learns that Kirino plans to leave home for America in the morning for track and field training, which disappoints him since she never told him about it before. Kirino becomes enraged when Kyosuke does not show the behavior she expected of him and beats him up. The next morning, Kirino decides not to go, and later also announces to Kyosuke her life counseling is not over yet, which makes Kyosuke happy. (Wikipedia)

As Kuroneko, whose real name is revealed to be Ruri Gokō, enrolls in Kyosuke's school, Saori feels a bit downhearted that she has not heard from Kirino. Kyosuke notices that Ruri is having trouble making friends due to her personality. Kyosuke and Ruri decide to take a look at the Games Research club, which is run by Gennosuke Miura, the guy Kyosuke had borrowed the bike from, and they eventually decide to join. As Kyosuke and Manami try their best to help Ruri, Ruri accuses Kyosuke of treating her like a replacement for Kirino. A welcoming party is held at the club, where Kyosuke meets Kōhei's younger sister, Sena Akagi, who goes a little crazy when her obsession with yaoi is revealed and she accidentally reveals her perverted fantasies to the rest of the club, forcing Kyosuke to call up Kōhei to calm her down. At the end of the day, Kyosuke admits that, despite feeling lonely without Kirino, he will not stop helping out Ruri, which makes her feel a bit happier. (Wikipedia)

Ruri and Sena are asked to work together to create a game for an online contest, with Kyosuke supervising them. After thinking about his options, Kyosuke suggests that they make an eroge. As the girls pitch their concepts, Ruri comes up with an expansive novel-based game, mentioning how she wants to do it in order to show Kirino up. Sena then gets upset when her concept is rejected due to its explicit hardcore yaoi themes and stops coming to the club, leaving Kyosuke and Ruri to work on their game alone. Just as Kyosuke and Ruri start to warm up to each other, several bugs show up in the game's code which the club cannot get fixed in time for the contest's deadline, so Ruri begs Sena to help her out, realising it's okay to lean on others sometimes. Working together, they manage to finish the game, which ends up winning the "Worst Game Award". (Wikipedia)

As Ruri and Sena's game is bashed on the internet, they decide to work harder towards making a better game. As Kyosuke prepares to go home, he receives a text from Kirino telling him to throw away her collection of eroge and anime goods. Kyosuke contacts Ayase, who reveals Kirino has not been in contact with her since she left either. Kyosuke then meets up with Ruri, who reveals her heartfelt thanks for helping her fit into school and encourages Kyosuke to fly to America to find the root of Kirino's problem, giving him a kiss on the cheek as he goes. Arriving in Los Angeles, Kyosuke meets up with Kirino at her track camp and plays eroge with her, cheering her up as she has not had time to play her collection. Kirino reveals that she had wanted to challenge herself and be more independent, saying she would not contact anyone until she managed to beat someone in a time trial, which she has not been able to do. Kyosuke tells Kirino that he is lonely without her and asks her to come back to Japan, which encourages Kirino to beat her elementary school roommate in a race and go home with him, reuniting with her friends and her anime. (Wikipedia)

In a quiet moment at a hotel, Kyousuke and Kirino come to terms with the reality that they can't marry (due to being siblings), yet their feelings remain undeniable. They tease out their future as a couple, reaffirm their bond in front of friends, and face an unexpected confession from Kanako—leading to a tender wake-up scene.

Sitting together in the park, Kyousuke and Kirino face both emotional and societal pressure head-on. A tense confrontation arises when old feelings flare—especially when Manami makes a dramatic confession. In the end, Kyousuke makes a heartfelt decision about his future with Kirino, setting the tone for a bittersweet new beginning.