At that moment, Angel roughly understood what Frost had meant by his words to Isabella.
"The phenomenon around the door will disappear, but the door itself probably won't," Angel replied.
"That door? You mean the only door without a matching pair?" Isabella looked at Angel suspiciously. "Why?"
"The other doors are merely phenomena. Phenomena will inevitably fade one day. But that door, unless something unexpected happens, should not be a phenomenon," Angel replied.
"If it isn't a phenomenon, then what is it?"
Angel did not answer immediately. After pondering for a moment, he said, "There are also some things about that door that confuse me. Once I figure them out, I'll tell you at once."
Isabella looked deeply at Angel, then finally nodded. "All right."
Isabella left. Before departing, she told Angel, "There are still some matters I want to discuss with you, but now isn't the time. Next time, I'll come find you."
Angel nodded in agreement. Before he and Frost had spoken, Isabella had already said she had something to discuss with him. But no one had expected such an upheaval to arise before Angel's conversation with Frost had even ended.
After Isabella left, Angel noticed that Kimberly and Isabella aboard the Sky Ghost Ship beyond the Dome had also departed.
As Kimberly left, she silently mouthed one word to Angel: "Congratulations."
Isabella, meanwhile, passed by with her head lowered and an expressionless face.
As those witches left, the Sky Ghost Ship slowly sailed into the distance. As it departed, a point of light flew down from the ship, eventually turning into a sheet of letter paper that landed in Angel's hand.
Angel opened it and found a congratulatory letter, its contents no more than blessings for his advancement. It also expressed the hope that, when Angel had