Nadeko awakens in the next day with Tsukihi, who had sneaken into Koyomi's bed with the intention of sleeping beside him, at her side. In the occasion, Tsukihi has Nadeko confess that she always was in love with her brother and realizes that the reason why she still harbors feelings for him it is because it makes easy for her to reject all other boys who ask her out, as she believes that having a proper relationship is too bothersome...