Link to your Game Design Doc on Google Drive.
https://docs.google.com/document/d/1kPpW6vrv-1S87Lx9d2bicnin7-t9ASrDLrYUXdn6FlU/edit?usp=sharing

Have you checked that your GDD is publicly accessible ?
Yes

Is your game set to public on itch.io so we can see it?
Yes

Summarise your game!
You are a goryo, a noble spirit who has been awakened by terrible demons after the have kidnapped one of your descendants. You have taken it upon yourself to get them back by any means necessary but you have no means to other than the ability to control weapons. You goal is to make it all the way through the dungeon defeating monsters to reach the other side and defeat the oni that has trapped your loved one.

Please explain how your game fits the theme:
As the main character you possess a weapon as it is your only means to move around and fight. You have become the weapon itself.