Planet Virel awakened several centuries ago. However, because they are so resource-deprived, the strongest warriors there are only Empyreans.
In this vast universe, such a planet is weak enough for the strong to claim and devour it. That is what most mercenaries do... They attack weak planets and turn the inhabitants into their slaves that they can sell for profit.
Thankfully, the planet isn't that important and, in a way, extremely hidden, so they have been living in their peaceful abode for years now.
However, when the Whispering Beast began causing trouble here and there, they decided to call for outside help, even at the risk of drawing attention to their small, peaceful world.
They knew that once hunters started coming there, the gaze of countless powerhouses would turn to them. However, because the Whispering Beast was so daunting, they chose to post the mission.
