After hanging up the phone, Jack's face turned gloomy as he surveyed his surroundings.
At that moment, he was still in Sherry's bedroom.
Jack got out of bed, his pounding headache feeling much better now. However, due to a lack of proper rest, he still felt weak, though not to the point where it hindered his movements.
"It seems the Celetial's Eye isn't as good as I thought," Jack muttered to himself. "After continuous high-intensity use, the side effects are worse than I expected. Could it be because of incomplete evolution?"
Jack mulled over the situation. If his condition was solely due to exhaustion from lack of sleep, he'd only feel mildly fatigued. However, this felt more severe, leaving only one plausible explanation: the prolonged, intense use of his ability.