Hibitaku
It is a type of Otaku. This word identifies an otaku girl who fantasizes a romantic or intimate relationship between two males.
An example of a manga that makes reference to this word can be found in "My Girlfriend's a Geek".
An example of a manga that makes reference to this word can be found in "My Girlfriend's a Geek".
Boy: Hey, so what kind of otaku are you?
Girl: Hibitaku!
Boy: O_O
Girl: Hibitaku!
Boy: O_O