Kent turned pale simply because he clearly knew what followed when Eliza put on the smile she currently had on her face.
The last time he saw that smile was when she snatched the Blood Seal scroll and dove into the Blood Gate.
From the little memory he has of that life, he never forgets that smile.
Before coming to this planet, Kent received a quest that required him to save Eliza, who happened to be his stepsister and also one of the most dangerous female warriors to ever walk the face of the universe.
She was also the general of the Blood Hounds, a legion formed by the Blood Spear King.
Kent had yet to recall all his memories, but the quest gave him enough to know just when to be cautious. Right now, from the little he remembered, the smile on Eliza's face said she was ready to kill.
Perhaps the elders of the Blue Horn Tigerkin Family also sensed her killing intent, so their hands reached for their weapons, their battle modes activating automatically.
