While Princesia was training in the basement under Monarch's residence, Principe was helping Samael, the Monarch set the Heaven's Pentagon spell up to destroy Penny's barrier, but he did something.
Principe thought. I had to leave the True Angel's book so that I could carry this spell book. If Penny's plans were on the way, then I needed to start my own as well, and that is why I was insistent on getting Father's trust, and not letting Penny kill him, I'm still angry she killed Mother.
"Father, I need your insight on this," Principe called for him at the back of the giant artifact for Heaven's Pentagon spell.
"Alright, what is it?" Samael asked as he headed to his side.
And then, the spell that Principe set up around him activated, affecting Samael but he didn't realize he was nor did he know that there was a spell that activated around him.