Soukyu no kihei Grimm Rocks

is a Japanese light novel series written by Edward Smith, with illustrations by Miwano Rag. The series began publication on June 9, 2018 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
An era in which the "royal bird cavalry" who fights on a large winged bird is regarded as the flower of the battlefield. While many talented cavalry shave the hoes, there were boys and girls who danced faster than the wind, stronger than the dragons, and more brilliantly in the blue sky than anyone else.

Razel, captain of the 57th King Bird Cavalry of the Republic of Justo. A straight boy who is rugged and warlike, but can't hate anything.

Mithra, the captain of the Knights of the Silver Maiden, which the Ankernia Empire is proud of. A friendly and caring girl, but with a particularly strong sense of defeat.

An exhilarating and exciting sky battle fantasy where two people with completely different nations and innate personalities fight against each other with unyielding beliefs!