Alvis, who served in the Royal Guard of the Rubelia Kingdom, was suddenly summoned by the king and informed of his engagement to a duchess's daughter. This duchess's daughter is the fiancée of the crown prince. Why did this engagement end up being with Alvis? Despite the bewildering situation, Alvis had no choice but to accept it. This is a common story about a broken engagement at a school, but it focuses on the person who is affected after the event, rather than the parties involved. * While the story is based on a dating game, the actual content has few elements of a dating game, so the tag has been removed. * The story has been published as a book series titled 'The Rubelia Kingdom Story' by Overlap Novels f. Volumes 1 to 7 are currently available. Thank you for your support. * A manga adaptation is also being serialized in Comic Garden. Volumes 1 to 4 of the manga have been released!