Shirakawa Hotaru, a girl who's in love with Inami Ken, finally confesses her love. From there on, they were happy couples, until one summer. Ken met a new friend, Tobise Tomoe, who is Hotaru's best friend. Tomoe seems to have her own charm. Ken, now have two paths to choose from; to be with Shirakawa Hotaru or Tobise Tomoe. Otherwise, he will lose them both.

A side story taking place somewhere before the second half of the series, prior to Daba acquiring the L-Gaim Mk-II. Daba's comrade Leccee is captured by Poseidal's forces, and Daba and his rebels attempt to save her.

New York City, the late 1920s. The battle with Nobunaga is over, the city restored to peace...until the owner of Little Lip Theater informs Shinjiro... "This time, the leading lady will be...you." Thus Shinjiro, disguised as the actress Petitmint, is forced into the role of "Cleopatra." The Star Division members set out to persuade a reluctant Shinjiro, beginning a chase across the five boroughs. Meanwhile, a dark-skinned youth and his servant have appeared unexpectedly in the midst of the flourishing city. His eyes, concealing a silent wrath, are fixed upon nothing less than the Statue of Liberty. Now Shinjiro and company must protect this city of hopes and dreams from a new menace while safely raising the curtain on a new show.

A.D. 2089 - 80 years have passed since Space War I changed the lives of both human and Zentraedi races. Both races are at peace on Earth when a new alien race called the "Marduk" appear within the Solar System. While covering the first battle between the U.N. Spacy and the Marduk fleet, SNN rookie reporter Hibiki Kanzaki discovers Ishtar, an "Emulator" that enhances the Marduk's combat abilities through singing. Hibiki brings Ishtar to Earth to teach her the values of life and culture. Together with ace Valkyrie pilot Silvie Gena, Hibiki and Ishtar must find a way to save Earth from total destruction at the hands of the Marduk leader Ingues.