The flute's melody carried a murderous intent. This could only mean one thing—Karina was locked in battle with someone.

This kind of flute sound was inaudible to ordinary people. Only those with significant power could hear it.

Felix did not hesitate for a second. After a quick warning to Laura, he bolted out the car door. In a nearby park dense with greenery, Felix had barely arrived when he heard a voice.

"Who's there?"

Felix could only laugh. Despite being a Grandmaster with his essen