Kaitou Magu no Ichibushijuu

Summary

There are rumours about Mag the Thief who steals only from corrupt, wealthy families and leaves two magnolia flowers; one in warning and one upon her successful thievery. No one knows when she will strike... and that she's actually not as capable of a thief as she would like. How will Mag cope when one mistake seems to pile on another and she risks being exposed?