Rex leaves Emham Forest after leaving the guy and the girl alone, 'I should've killed them but my hand is too bloodied right now', Rex thought.
He becomes uneasy with himself because he already killed many people.
The people he killed before are all bad guys, he knows that it is the right thing to do but now his hands become lighter upon killing a human.
Rex looks at his hand and saw that it is warm and still.
He becomes used to killing humans just like he kills Supernatural,
Rex frowns while seeing his hand as a flash of every people he killed crossed his mind, he clenched his fist and steeled his will, 'It's a must to become stronger, soon I will stop killing human'
After steeling himself, Rex exit Emham Forest.
Upon leaving Emham Forest, Rex saw a couple of people wearing light green uniforms.
There are four people wearing light green uniforms, two women and two men and they're all looking at Rex signaling him to come closer.