The prince's mouth was open in surprise when he saw the two new intruders who knocked out his men with a single blow. These two new intruders wore similar clothes to the man who held the dagger to the prince's neck and although not to the same level, the prince could sense the dangerous aura they had.
The most tragic thing was that the prince had not been able to identify how these men got into the room. Although the prince is not a skilled warrior, he had witnessed different abilities due to the position he held, but none like these men.
People specialized in stealth normally used shadows to move around, but it wasn't like they could ignore physical objects, for example, this basement only has one entrance and to enter regardless of your shadow ability, you need to open the door.