Kyousuke Kousaka is a fictional character from the visual novel and anime series Ore no Imouto ga Konna ni Kawaii Wake ga Nai, also known as Oreimo. He is the older brother of Kirino Kousaka and plays a central role in the story, which revolves around their complex sibling relationship and Kirino's secret life as an otaku. Kyousuke is depicted as a caring and supportive brother, often helping Kirino navigate her interests in anime and video games. Throughout the series, he undergoes personal growth, learning to understand and accept his sister's passions while also dealing with his own challenges and relationships.