Link to your Game Design Doc on Google Drive.
https://docs.google.com/document/d/1PzB1ejDOmnuTkFWkmPFwl9V76uGCXO2goYzGGVi45JI/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 swing your sword around to protect the gem heart at the centre of your castle. Enemies move in to destroy the heart, you are sworn to protect the heart from the enemies. See how long you can survive.

Controls:

Sword follows the mouse cursor or can switch to keyboard controls on the main menu.

Keyboard controls - 'A' and 'D' keys to move the sword.

Please explain how your game fits the theme:
Your soul is bound to the sword therefore you are the weapon.