Stratos 4 Advance
Japanese title: ストラトス・フォー アドヴァンス
Type: OVA
Episodes: 6
Source: Original
Genres: Comedy, Sci-Fi
Studios: Studio Fantasia
Producers: Bandai Visual
Duration: 26 min per ep
Rating: PG-13 - Teens 13 or older

Having failed the Comet Blaster exams mysteriously, Mikaze and her friends are sent back to the Shimoji Island base, where, with three new Meteor Sweeper trainees around, they have been promoted to instructor positions.

Meanwhile, more comets are on their way to Earth, and the mysteries behind the rift in the Cosmic Emergency Management Agency—as well as the alien parasites—begins to unravel.