Ep 9. E 9

Kirino has been staying with Kyousuke ever since she reconciled with her parents. Kyousuke has been using his free time to help her adapt back to her old life, specifically her otaku lifestyle. They even went to a major otaku convention together, where they saw some new and interesting items. After the convention, Kirino leads Kyousuke to her room and shows off her extensive otaku collection.

Kyousuke is impressed by the collection, but Kirino mentions that there is something else she wants to share with him. She pulls out a game called "Love Plus" and reveals that she has been spending a lot of time playing it lately. It turns out that the game involves developing a romantic relationship with a virtual girlfriend, and Kirino has become very invested in the game.

Kyousuke is surprised by this development, but he decides to try the game out for himself. Over the next few days, he spends a lot of time playing the game, and he even manages to develop a relationship with his virtual girlfriend.

However, things start to get complicated when Kirino reveals that the virtual girlfriend in the game is based on her own appearance. Kyousuke is confused and unsure of how to feel about this, but he realizes that he needs to talk to Kirino about it.

The two siblings finally sit down and have a heart-to-heart conversation about the game and their feelings for each other. Kirino admits that she has always had romantic feelings for Kyousuke, and that playing the game was a way for her to explore those feelings without actually acting on them.

Kyousuke is initially taken aback by this revelation, but he comes to understand that his sister really does love him in a romantic way. They both promise to keep their relationship a secret, but they know that they can always count on each other for support.

As the episode comes to a close, Kirino packs up her things and prepares to move back in with her parents. She thanks Kyousuke for everything he has done for her, and they share a meaningful goodbye. However, as Kyousuke watches Kirino leave, he can't help but feel a sense of sadness and emptiness. He realizes that he has developed strong romantic feelings for his sister as well, and that their love for each other is something that cannot be denied.