The third series of Onegai My Melody.

One Man vs. an Empire! Through fear and conquest, the Empire of Valdana holds the future of most of human space within its iron hands, and for generations, those hands have belonged to the Landless Lords of the ruling Tytania dynasty. But now the foundation of the empire is crumbling, pockets of rebellion are forming and when a mission sent to punish the city-state of Euriya is shockingly defeated, the man responsible becomes the target of a galaxy-wide manhunt! For Fan Hyurlick, architect of Tytania's first defeat, glory becomes desperation as his own side betrays him. Now Fan must not only save his own life, but somehow turn the tables on opponents who have whole worlds to command!

Cool-headed and rational, Koujirou Shindou is a government official and master negotiator with a well-earned reputation. While departing on a business trip, a giant cube materializes and his plane is taken undamaged into the mysterious, indestructible structure. As Japanese authorities attempt to identify the cube's properties and origins, Shindou encounters an otherworldly entity known as Yaha-kui zaShunina, who materializes in the form of a human man. He assures Shindou that the passengers are not in any danger and requests help in negotiations with the human world. Hailing from a higher dimensional universe known as Novo, Yaha-kui zaShunina is able to transfer information between Novo and Shindou's universe through a cube called Kado. Despite having these unfathomable abilities, he does not appear hostile. Instead, he announces that he has come to this world with only one intention: to "advance" humanity—starting with Japan. [Written by MAL Rewrite]

Idol-obsessed Kousaku Hata is left devastated when his favorite, Yuka Kusakabe, unexpectedly announces her retirement at the peak of an illustrious career. As Yuka’s biggest fan, this news proves to be more difficult than he can bear. Shaken to his very core, he sinks into depression and places himself in self-imposed isolation. However, on the day his friends managed to convince him to attend school again, he gets a pleasant surprise. It turns out that his beloved idol, under the guise of Ringo Kinoshita, has transferred into his class. This miraculous development fills Kousaku with newfound resolve, as he dedicates himself to take advantage of the once-in-a-lifetime opportunity. With the support of his teacher and friends, Kousaku works toward getting close to the girl of his dreams and uncovering the reason for her retirement from the entertainment industry. [Written by MAL Rewrite]