Supernatural cleaners Kyutaro and Fumi can literally sweep trouble away...but can Kyutaro sweep Fumi off her feet? One day, Kyutaro Horikita, the tall, dark and handsome cleaning expert of Kurokado High, comes across a sleeping maiden named Fumi Nishioka at school... Unfortunately, their meeting is anything but a fairy-tale encounter! It turns out Kyutaro is a "Sweeper" who cleans away negative energy from people's hearts--and Fumi is about to become his apprentice! Fumi still has no memory of her past, but she begins to feel a sense of calm working and living with Kyutaro and his family of Sweepers. But when a Bug Handler goes after her, how will she overcome his dark manipulation?