October 3, 2010 12:00 am
After bumping into his little sister, Kirino, in the hall, Kyōsuke Kōsaka finds a magical girl anime DVD which contains a little-sister themed adult game inside. Kyōsuke soon learns the game belongs to Kirino and confronts her about it.
October 10, 2010 12:00 am
Noticing Kirino has no one to share her hobbies with, Kyōsuke asks for advice from his friend, Manami Tamura, who suggests that she make some otaku friends.
October 17, 2010 12:00 am
Kirino hangs out with Saori and Kuroneko again and is surprised to find that they do not have to worry about hiding their hobbies.
October 24, 2010 12:00 am
When Kirino forces Kyōsuke to play a beat-em-up eroge, he asks Saori for some playing advice.
October 31, 2010 12:00 am
Kirino's best friend Ayase, finds out that she likes eroge.
November 7, 2010 12:00 am
Manami invites Kyōsuke over to her house to try out some sweets made by her family's shop for a Halloween event.
November 14, 2010 12:00 am
Kirino drags Kyōsuke around the city on Christmas Eve.
November 21, 2010 12:00 am
While Kirino's novel becomes increasingly popular, her editor reveals that it may be adapted into an anime.
November 28, 2010 12:00 am
Kirino gets a long awaited adult game in the post and spends the entire day playing it.
December 5, 2010 12:00 am
Ayase asks Kyōsuke to give her advice on a present she can give Kirion to make up with her.
December 12, 2010 12:00 am
After running into her at the supermarket, Kyōsuke invites Manami over to his house to help him make lunch.
December 19, 2010 12:00 am
Kirino uses her final life counseling session to ask Kyōsuke to buy her an adult game that is launching at midnight in Akihabara.