A book found inside the tower. Its contents were about moonlight magic, which studies immortality. Moonlight magic, abnormally concentrated magical elements, and the undead woman Nia met. All of them suggest the dangers of this Misty Tower.

"Isn't it dangerous here? Shouldn't we leave immediately?"

But Nia, as if guided by something, wants to go deeper into the tower. Nia rescues Mano, who was sexually assaulted by monsters attacking the airship and was in crisis, unable to do anything. Recognizing her abilities, Mano sends Nia off, feeling a touch of unease. And in the deepest part of the tower. There, Nia learns a shocking truth.

A wide variety of monsters infest the "Misty Tower" shrouded in mist! Though covered in semen, Nia and Mano press on to the deepest part of the tower! What is the true identity of the vanished sun...!?