The Old man looked at Grey with a cold expression, "So you're saying you're capable of killing them?"
Grey and Klaus chuckled, "Do we look so dumb that we'll put our lives in danger?"
The Old man thought about it and felt maybe they were not dumb, but just overestimating their abilities.
"Here's the thing, you should already see how incompetent they are, we've been here for a few minutes now and they don't even know if we're here." Klaus gave a mocking laugh as he said.
When the Old man and the Prince thought about it, they couldn't help but agree with Klaus. If the two experts there were strong enough, they would've already sensed the presence of Grey and his friends a while now, but they haven't, which meant they weren't aware of their presence in the building.
"What do you want?" The Old man calmed his nerves and asked.