QQ Sweeper

 (QQ スイーパー; Kyūkyū Suīpā) is a dark fantasy, supernatural, shoujo romance manga written and illustrated by Kyousuke Motomi. It ran from March 13, 2014 - May 13, 2015 in the shojo magazine, Betsucomi.

It is the prequel to Queen's Quality.

Volumes

 * Volume 1
 * Volume 2
 * Volume 3