The Poppy War : Woman Warrior Weapon God

When Rin aced the Keju the test to find the most talented students in the Empire it was a shock to everyone: to the test officials, who couldn't believe a war orphan from Rooster Province could pass without cheating; to Rin's guardians, who had hoped to get rich by marrying her off; and to Rin herself, who realized she was finally free from a life of servitude. That she got into Sinegard the most elite military school in Nikan was even more surprising.

Because being a dark-skinned peasant girl from the south is not an easy thing at Sinegard. Fighting the prejudice of rival classmates, Rin discovers that she possesses a lethal, unearthly power an aptitude for the nearly-mythical art of shamanism.

Exploring the depths of her gift with the help of psychoactive substances and a seemingly insane teacher, Rin learns that gods long thought dead are very much alive and that mastering these powers could mean more than just surviving school.