I LOVE this name! It's the name of a character from the video game Majora's Mask that I really really like! Great name, but I'm not sure if I would name my kid this...it's a little odd. :)
This name appears in the Legend of Zelda: Majora's Mask. The daughter of the mayor is named Anju and has a sidequest where you reunite her with her cursed lover, Kafei.