Chosen

"Every human will rise from the earth,
Thrive above its soil,
And return to it as dust."

The Blessed World has long since been destroyed. Plagued by sin, the ancient divine force, once present in every corner of the world, has been forgotten by all of humanity. Its enlightened preachers and powerful mages now hide away, waiting for their empty prophecies to come true. Their only hope is the Ruinaux, said to be imbued with The Light's impervious energy; a saviour prophesied to return for centuries.

The holy task falls upon Keisti, a high school student in another world, who seems to be more focused on finding boyfriends than vanquishing demons.

It's only when the Light calls out to her that she must rediscover her destiny.