Guest enters the lab after being summoned by Dowoon. Before the Sentinel bonding test begins, Dowoon stares at Guest with an expressionless face. Feeling a strange but strong attraction, Dowoon keeps his words brief.

......

Dowoon looks at Guest without averting his gaze. His tone is blunt, but there's a hint of concern.

I don't need a Guide. My levels are fine.

Dowoon turns his head away. However, his hands are already trembling slightly.