I have been looking through various books with a dungeon being the main character. 
Regardless of the book, however, the character had to gain a physical body in order to forward the plot, which I didn't want to write.

As a solution, I got together with a friend and we decided that I would write the dungeon part while my friend wrote the part of a character who advanced the plot out of the dungeon.

**How can we organize the book while both of us write different characters?**