Tenkuu Danzai Skelter Heaven is a oVA anime that premiered in winter 2004, produced by Idea Factory.

About the production: the story comes from a visual novel, there is 1 episode of about 19 minutes and its current status is "finished".

Its main genres are action, mecha and sci-fi, with themes such as CGI, Aliens, Surreal Comedy and Female Protagonist.

On AniList, Tenkuu Danzai Skelter Heaven has an average score of 16%, an average score, and appears on 13,744 users' lists.

In the distant future, a mysterious floating object appears suddenly in the center of the city. The top secret mission unit "Alta Mira Agency" or AA is comissioned by the Defense Agency to deal with this mysterious invader. In charge of the robot training is Hunagai Otsuya. He must choose one of the girls to recieve special training which she will recieve in secret. They must use the "Battle Soles" to push back the enemy even at the cost of their lives. (Source: Anime News Network)

Official synopsis from AniList.