Konyaku Yubiwa ni Tsuita Uso

An editorial worker conceals her royal lineage from a defunct kingdom. A wealthy man, featured in her magazine's list of top ten most attractive single men, visits her with an accusation: that her sister has stolen a valuable item from his home. She believes her sister would never act to damage their family's reputation. To avoid legal consequences, and with the blessing of her grandmother, a former grand duchess, she agrees to accompany him on a business trip to Paris under the pretense of being engaged.