Was their prior behavior just a disguise?
That's not quite accurate either, because before the unknown entity triggered negative emotions, those infected appeared normal if they hadn't encountered anything related to the meteor.
It's like a basic rule: as long as you don't touch the meteor, everything remains normal.
"Ah..."
A murmur escaped Tusi's lips, seeming absent-minded, with a fervent and impulsive glance directed towards the nebula.
In the next second, he dashed forward, resembling a fearless Berserker, with his physique undergoing subtle changes and appearing beast-like.
His sister stood even straighter, tiptoeing as if she were a rocket ready to launch into the sky.
The nebula churned, darkness torn apart, and suddenly, the "Dark Meteor" Esti descended upon this space.