Le Fluer: Braves of the Sacred Flower

Braves. That is the name given to the ones who fight against the Chimeras. They suddenly appeared some hundred years ago, humanity's greatest enemy. After many years of fighting amongst each other the world united to confront a common enemy.
The Braves are the only ones who can fight the Chineras. They possess the strange power called Ascedance. The Chimeras brought humanity the power of Ascendance and the knowledge of the higher worlds. Establishing connections with these foreign worlds, humanity struggles against the fight with Chimeras.
While they are students, they fight against the Chimeras. Braves' ability vary from each other, some are for combat, others for defense, and some for healing.
Arata, a young man without memories who is saved by William joins the Wings Academy a prestigious university of Braves. There he meets seven people who change his life.
In the face of despair and powerlessness what he finds is a single flower that blooms in a bloody battlefield.
What awaits him is it hope or despair? The gears of fate begin to move and the story of the young souls begin.