|This article contains information that only occurs in an OVA|
The Devil’s Tower in the background.
The Devil’s Tower is the headquarters of Ganzack and his band of pirates, which is a giant cannon. All the inhabitants of the island except the children and the old people have to slave there. Medaka’s father Herring is also held captive in the Devil’s Tower and must work for Ganzack.
However, it later turns out that the Devil’s Tower is part of Ganzack’s pirate gang’s ship and can also be fired from aboard. However, it went down together with the ship after Plesiosaur was defeated.