One with an obsessive interest in something, particularly anime or manga.(noun)
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Use "otaku" in a sentence
"PW Comics Week talked with Galbraith about the nature of Japanese fandom and the history of the term otaku and how this Japanese subculture of cool stuff-from manga, anime and cosplay to gaming, toys and related merchandise-has evolved and changed in recent years."
"I found myself drawn towards Japanese anime, prompting my transformation into an "otaku", a Japanese word for a person obsessed with anime."
"• Japanese Prime Minister Taro Aso, an avowed otaku, is calling upon manga, anime, fashion and video games to help pull his country out of a recession."