Babel Tower

Babel Tower
Location	Demon World
Inhabitants	Demon King, Three Greats, 13 Crowns

Babel Tower (魔界塔 (バベル)  Baberu^?, or Demon World Tower) is the place where several elite demons in the Demon World converge. The topmost three elite classifications are currently revealed as the One Demon King, the Three Greats, and the Thirteen Crowns.

Structure

The Babel Tower consists of 666 floors, each depicting a workplace of the Demon Group at different levels.

665th Floor

Discussions among 10 of the 13 crowns (also known as the great heroes of the Demon World) often occur on this floor. They try to manage the crisis unfolding in the Netherworld to keep it stable. On some occasions, the remaining crown members (the Three Greats) can also visit this floor to join meetings if necessary.

Once in a while, they organize a banquet called the Thirteenth's Dinner and invite several special guests for the occasion. An onyx-colored plate-like shape, with the writing inscribed at the center, is handed out to those guests as an invitational message.

666th Floor

This floor is strictly only for the Three Greats. When there, they usually discuss which of their grandsons is the cutest and how to find the next Demon King.