Kyōsuke Kōsaka

Kyōsuke is the 17-year-old main character of Oreimo. He has a distant relationship with his sister, feeling that this will never change. However, this suddenly changes when he finds one of her adult games and learns that she is an otaku. Through this, he tries to be a supportive older brother while realizing he himself knew very little about his sister, such as being almost flawless at school to working as a model. Later on he takes up more of his role as an older brother to her, and appears to be able to tell what she is thinking or really meaning to say despite her tsundere personality. Despite this, she is generally the dominant person in their relationship, with Kyōsuke being shown to be openly intimidated by her, only standing up to her in truly serious situations. Kyōsuke prefers to have a relatively peaceful and simple life despite the fact that the drama Kirino brings makes his life anything but peaceful. He also seems to enjoy drinking tea from a carton as he frequently has a glass of it when he gets home.

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