Maru and Moro (Marudashi and Morodashi) are two "spirits" that live in Yuuko's shop. Most of the time they are Yuuko's "yesmen" who always agree with her and do whatever she says, and other times they are relaxing with Yuuko while Watanuki does all the work. How Maru and Moro were made and who created them is unknown, but there is no way for them to disappear unless they leave the shop.