As soon as Nyx turned around, he sensed a heavy killing intent, that was like a Tsunami that had rushed to him in an instant.
Before he could even react, the knife was merely a few inches away from his flesh. However at the last moment, Janus stopped before his blade could touch Nyx's flesh.
Nyx also reacted by now, his figure disappearing. He appeared a few meters away, his face pale. He couldn't believe his eyes as he looked back at Janus in disbelief.
"Were you testing my reaction speed, Uncle Janus?" he thought, trying to find a logical explanation.
He knew that he was late. If Janus hadn't stopped, he would've been stabbed. So he thought that Janus never had an intention of truly hurting him.
Unfortunately, looking at Janus' face, he realized that he was wrong. In fact, Janus wasn't even looking at him. He was looking behind Nyx.