Ange Vierge

 In the Universe there are five separate worlds. The Black World, Darkness Embrace, The Red World, Terra Rubiri Aurora, The White World, System White Eguma, The Green World, Grunewald Silt, and The Blue World, Earth. One day the worlds became connected and girls from each world gained powers called "Exceed". These girls are known as progress, and they work together with girls called Alpha drivers who use their emotional bonds with each other to protect and empower the progress. Together they fight the enemies of humanity known as Ouroboros. By Gathering all the progress and Alpha Drivers onto the island of Seiren humanity became safer. Saya Sougetsu is a progress who wants more than anything to become powerful and stand out. However, that becomes difficult when the Ouroboros capture all the most powerful Progress and consume them with darkness, as well as put all the Alpha Drivers in a coma-like state weakening the progress significantly. Will Saya and her friends be able to save their comrades as well as the different worlds from destruction?

Ange Vierge was pretty interesting. It bears a similar resemblance to Infinite Stratos, Sky Wizards Academy, and Hybrid X Heart Magias Academy Ataraxia. It follows the whole girls with powers fight robots in the sky premise. The thing that differentiates this from the others is its not a Harem Anime. There are no male characters at all. However, there is an incredible amount of bath scenes. I would say that probably around 80% of this anime is girls talking in the bath. The majority of it is censored but not to the point where the entire screen is covered like they do in Harem in the Labyrinth of Another World. I can't say I would suggest this unless you are looking for the whole girls fight robots in the sky type anime.