Vale made sure that the person carrying the box was sound asleep, courtesy of the [Spiritual Eye] technique. Using his [Ghost Effect] magic technique, he was able to penetrate the walls of his room and enter the hallway undetected. Vale avoided using the door, knowing that if he was caught destroying the black box, he would be immediately suspected.
The [Ghost Effect] had a two-minute cooldown, so Vale waited until it was ready again to enter the room of the person carrying the black box. Vale's heart was pounding with excitement as he swallowed hard and passed through the person's bedroom wall.
Vale breathed a sigh of relief when he saw that the person was indeed sound asleep. To ensure that his actions wouldn't wake him up, Vale sprayed a solution that he had concocted earlier. Not content with that, Vale also placed the person under the [Silent Trap Illusion] magic technique.