Sky x Heroine BraveWing!

Strange weather patterns have begun hitting Japan, with clears skies being filled with green storm clouds and gentle breeze turn to Hurricane force winds.
In the middle of these troubling circumstances, Elementary school student Haruka Aozora has a fateful encounter when a young girl and a bird-fairy drop from the sky. The girl, Iroha reveals the truth of the storms: There exists a Kingdom in the sky called Altaira which lost connection with the "Ground World" years ago. Taking advantage of the severed connection is a terrorist group known as "Stormforge", who weaponize fear itself, turning terrified humans into storm monsters called "Kuraikumos"
In order to stop them, Haruka must become a heroine of the skies.