Chapter 360 - Clues
2 hours later, finally it was Sam's time to fight in the battle ring. Tony and the others already finished there and also won their matches. Not just only Tony and the girls but James, Aliya or even Gustav won their matches.
From the first Sam kept observing Gustav. He needs to find out the truth of this matter and because of this, he is observing him. Well currently he knows that all the saints were busy with those people from the other world. Because of this, Gustav was able to participate in this competition without any problem.
Most likely to be able to see the black aura you needed high grade observation technique or spiritual vision technique. Unfortunately it was very real and not everyone could learn that. Because of this, still now, nobody was able to notice the black aura that was coming out from Gustav.