The second protagonist in the series. Q-ko is a cute, shy, and naive robot whose memory was lost while taking on an un-detailed mission. She ends up with Kirio as her pilot, although it seems as if that is so only because she did not make contact with Furiko first. In many ways, she is just like a human; she eats (though she does not chew), she gets hungry, and apparently can feel love and compassion for real humans, like Kirio. In battle, she utilizes a small shield in the shape of a heart and can slice enemies apart with a single laser sword that extends from the fingers of her right hand. Q-ko has large bunny-ear-like panels that are the same color as her hair, they float in place through means unknown. They appear to act similar to wings, streamlining her movements while flying for added speed. She is or was a member of the Council of Nine Sisters and is the ninth oldest of all the 130 Sisters.