Yoshitsugu Kiryuu, continuing his family's legacy, serves the Saionji family as a butler and the primary guardian of their sole offspring, Kaede. Despite harboring feelings for his young master since their childhood, Yoshitsugu recognized that his master desired a prince, an ideal he could never meet. Consequently, he pledged to serve as his master's loyal knight and conceal his unrequited love, even as his master searched for his ideal match. However, when his master returns claiming to have found the prince he has always sought, can Yoshitsugu truly subdue his emotions?