How does your game fit the Magical Girl genre?
In the City of Sin, being a "Magical Girl" is a prestigious job, known for its high pay and the fame that comes with battling heavenly abominations, known as Celestians. Vanny takes up the job after all of her hard work of getting out of debt was gone, finding a way out. She can transform into a magical girl to gain superhuman abilities with a magical guitar weapon.

Which theme(s) do you pick?
World Vanquisher

How does your game fit those theme(s)?
Long ago, God declared light throughout the cosmos and named it Heaven. However, the light of heaven never reached a certain area of darkness. Heaven waged war and so the citizens of the underworld of wrath, were forced to fight against this divine intervention. The Celestian enemies were especially inspired by the concept and aesthetic of World Vanquisher.

If you follow any of the optional challenges, elaborate as you like.
None.

Were the assets for your game made during the jam? Elaborate as you see fit.
Yes, completely in-house.