After successfully returning to Earth on the renovated Stratos 4, the four main characters are visited by the Comet Blasters Chizuru Kubo and Annette Kerry, who bring them a shocking video. Meanwhile, Orbital Station 7 is in serious trouble... This two-episode OVA comes between the first and second seasons. (Source: ANN, edited by Glenn Magus Harvey)

The Earth has developed a defense system against large meteorites that are on a collision course with it. This protection system is made up of the Comet Blasters based in several space stations as the 1st line of defense, using nuclear warheads launched by spaceships. The 2nd line of defense consists of the Meteor Sweepers launching from ground airbases using hypersonic planes with special missiles to deal with the resulting debris from the blasts. Mikaze is a troubled girl that is a trainee pilot for a Meteor Sweeper team that dreams of becoming a prestigious Comet Blaster pilot. Stratos 4 revolves around Mikaze's and her teammates' challenges to become real pilots, while the Earth faces the threats that come from space. (Source: ANN, edited by Falre)

A teenage boy has now moved in the home of his mother's friend, because she had died a while back. It just so happens that the Yakuza family has four beautiful daughters, but one daughter, Hibari, who is more beautiful than the rest of the daughters, is actually a boy. Hibari just can't keep his hands off our hero and so their crazy yet happy lives go on. (Source: ANN)

The story of the anime is set in the year Mobile Century 8013. It has been over seven millennia since humanity was wiped out on Earth, but the surviving military robots continue to wage war with no end in sight. The war has embroiled the Rebellion Federation that controls Europe and the Principality of Shin centered in Asia. Three young robots stand up to put an end to this futile war. (Source: ANN)