Explain the behind the "spirited away" (Kamikakushi) concept used here. Provide a list of all Seven Wonders and their powers.
: The leader of the Seven Wonders who reveals the truth about Boundaries. (Dub) 3 : The Misaki Stairs, Part 1
: The only person who remembers Aoi and the driving force behind the rescue. Explain the behind the "spirited away" (Kamikakushi) concept