Life hasn't been all too easy for Yuji Midorikawa, Gakusei 5's G-Green, ever since Madame Mayura of the Gurdark came to live with him. But things just start getting worse when the Dark General Zaros comes to the surface to reclaim his fiance, Madame Mayura!! When Mayura refuses to return with Master Zaros, Earth is suddenly in danger and Yuji becomes desperate. He swears to return Mayura's horn back to normal, but the only way that can happen is for Mayura to fall in love with someone. But does Yuji really want the fierce and sadistic Madame Mayura to return?