Momona is a 14-year old Middle School student who longs for his older cousin during his wedding, however due to her bond with and not knowing his bride, she cannot fully smile until she meets Lady Diana and accidentally gets transported to the Jewel Palace. She is very shy, and yet has full of determination. Ruby is her mentor and partner and the two get along well during her stay in the Jewel Palace as a Petit Lady. Momona doesn't get along with Cayenne during her stay, thought the two are developing a certain crush to each other, at a point of Lillian's jealousy. However both of them settled their issues and Lillian will allow her to be with Cayenne if she's prove herself to be a real lady. She both possess a Miracle Letterpen and a Jewel Pod as proof of being a candidate, allowing her and Ruby to do magic together.