Klaus stared at the body of the man in dark clothes, passed out on his floor, and smirked. The moment the man slipped into the wall, Klaus sensed him. It was a foolish mistake. Though Klaus didn't know how to limit his senses to a specific radius, he never let them go easily.
It was evening now, and he figured if he focused on their suit, he might see more, especially with three ladies in the room nearby. So, he deactivated his full awareness but kept a part of it active. The instant the assassin used his spiritual qi to slip through the walls, Klaus felt it.
He then activated his sense knowing he would have to apologize to some people in the morning. But after sensing the intruder, he found that the man was just a saint. So, Klaus did not attempt to reveal that he had sensed him. Instead, he jumped onto his bed and waited.