Ore no Imouto ga Konnani Kawaii Wake ga Nai

Synopsis

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.

(Source: Wikipedia)