Fairy Field

In a near-future world, war has been eliminated by small bio-robots called Fairies, a product of advanced nanotechnology. Tatsuki, a high school student, and his sister-in-law, Akane, encounter five Fairy units—girls with mechanical wings and large pistols—who request Tatsuki's participation in a simulated combat event called Fairy Combat. During his initial match, he is noticed by an experienced competitor known as Warrior Princess.