Meruru Hoshikuzu is a fictional magical girl character from the in-universe anime 'Hoshikuzu Witch Meruru,' which is featured in the series 'Ore no Imouto ga Konna ni Kawaii Wake ga Nai.' Meruru is a cheerful, energetic, and justice-loving witch who uses her magical powers to protect the world from evil. She serves as Kyousuke's sister Kirino's favorite anime character and is an iconic representation of the magical girl genre within the series, often fueling Kirino's passion for otaku culture.