Prologue: Krystal Shin

Remnant. A world full of legends that have forged humanity in its four kingdoms: Vale, Vacuo, Mistral and Atlas.
The man, born from the dust was strong, wise and resourceful, but he was born in a ruthless world where living creatures thirsty for destruction live: The creatures of Grimm. They set their sights on man and what he creates. Men are trained to fight against these creatures: they are called "Huntsman" and "Huntress".

This is what the history of the KNRD team (Konrad) is traced