Being a Sky Fox but Becoming a Magical Girl

The world was originally peaceful, but the invasion of another world broke everything. Facing the invasion of another world, what should the three tribes do? Only by uniting can we completely defeat the invaders. Because the world belongs to us, we must all do our part to protect the world. In this war against the invaders, because of the bloody battles of the frontline soldiers, only a moment of peace can be enjoyed in the back. In this world where magic is intertwined, the originally difficult battlefield has become less difficult due to the appearance of magical girls, because magical girls are the representatives of miracles. As long as they appear, the alien beasts will definitely be destroyed! But is it really that simple? "Susu, do you think the song I sang just now sounds good?" "It's perfect~"