Weakness...
This was an emptiness coming from the soul, in the less than a second just passed, all his strength had been drained away.
At this moment, Chen Xiao slumped against the wall, not wanting to move even a finger, his breathing so faint he could barely feel it. He exerted all his energy to barely keep his eyes open, not allowing himself to pass out.
Because the guy who called himself "Angel" was still in front of him, if he passed out now, who knows what might happen.
Suddenly, he saw the "Angel" sister approach him, smiling as she said, "The cost of this ability is quite significant, so don't misuse it, otherwise, I'd really be upset if you died."
She spoke in an adorable tone, then, it seemed like she suddenly remembered something.
"Oh, right, try not to use this ability near devices that detect 'strange things', or else you might end up being locked up and used as a research subject. You wouldn't like that feeling."