Fairy Field

In the near future, acts of war have disappeared thanks to the small bio-robot "Fairy", born from the evolution of nanotechnology.

Tatsuki, a high school student, and his sister-in-law, Akane, are confronted with five "Fairy": beautiful girls with mechanical wings and giant pistols. The girls beg Tatsuki to participate in the pseudo-fighting competition "Fairy Combat", but in his first match, he is discovered by a high-level player known as "Warrior Princess"...

(Source: Asahi Shinbun Shuppan, translated)