"It became a mirror! Why?! How am I supposed to record what I see if it only wants to reflect my own image--" He carefully lifts the tablet to the crack, keeping the screen purposefully low. So it doesn't also try to capture Tech's face. From the sliver of picture Tech can see, Rokuro seems to have activated the front facing camera.

"To look in a mirror at night is entirely foolish. You have no way of knowing what evil may be looking back at you." Peevishly, because Tech doesn't seem to be grasping the seriousness of this incredibly stupid situation.