Otaku is a Japanese slang word, deriving from the honorific "おたく" (otaku), meaning "your house", that has come to mean someone who obsessively exerts time, money, and energy into a hobby. Otaku have a deep, complex knowledge around a particular subject or area of study, and is oftentimes (esp. in the West) used to refer to avid consumers of anime and manga. The term can be compared with Hikikomori"."