Jinto Lin is a young nobleman, whose world was taken over by the largest empire in the galaxy: the Abh Empire. Jinto's father, the president of his home planet, handed their world over to the Abh in exchange for a standing in the Abh Empire. As a result, Jinto became a member of the aristocracy and was shipped off for an Abh education. On his way, he meets a princess of the Abh Empire, Lafiel, whom he quickly befriends despite her cold exterior. But the Abh empire is plunged into war…

[Source: Anime News Network]

This is the story about how Dubus, Lafiel's father, and Plakia after an adventure on a mysterious, abandoned spaceship decided to have a daughter together and why Dubus gave her the name Lafiel.

[Source: Anime News Network]