[Hooves]

I dont know if this has already been posted but a few things came to my mind about Kyousuke...

Spoiler for Kyousuke IMO:

Kyousuke is your average plain guy that gets dragged by Kirino into the world of Otaku apparently. Since Kyousuke knows Kirino in general as this amazing person that has defiantly earned her reputation, he would think it would be unfair that Kirino would lose that reputation all of a sudden if people found out about her Otakuness. Since Otaku's in general, are mostly discriminated by society. He is willing to risk his chances (giving the fact that he is plain and basically people ignore him) to lose his trust on other people, or simply get them angry. In order to sustain Kirino's hard-working reputation as a model, and her enjoying lifestyle as an Otaku. Also the fact that Kirino is still a young girl in this growing stage of her life. She should not be dealing with so much stress that she has already about her activities, so Kyousuke just basically puts the blame on himself.