Lithel's Alley

Arisen from the ashes of a great nuclear holocaust, the once forgotten practices of our ancestors ran supreme, breathing life to a new age. It's said history tends to repeat itself. As they had nearly thousands of years before, nobility danced through lavish masquerades while the ones of poverty skimmed the empty streets honing skills deemed forbidden.
Amongst this grand new age of magic, two Illusions of Magicians were formed of magically gifted nobility. Known as the Luminescence and the Fireflies, these Illusions worked with a small family of lesser-known royalty to build a towering city atop a small Isle for the survivors of the war to find a safe, less radioactive place to settle.
Four generations later, the whole of Nadir Isle had grown to every edge of the land, its city stacked upon itself in crooked structures of colossal heights. Running amok across the bridges and through the alleys of the Isle was a newly founded Illusion, declaring themselves the Shadow Breathers. This group of four had come together in hopes of rebellion against the Fireflies who'd fallen back on their word of protecting the people and began killing innocents for seemingly no reason.
As the little group of magicians making up the Shadow Breathers would soon find out, there was more going on behind the scenes of the Fireflies than they original thought. From an abandoned puppet show and its little marionette, to a crime dating back centuries, the lies behind the founding of the Fireflies would be rightfully brought to light by the Shadow Breathers.

And it all started in an alley, filled to the brim with rotted, smiling puppets.

(This amazing cover art was made by... somebody on Pinterest! It's been repinned so many times I dunno who it actually belongs to. If you do know/are the creator, please let me know! I'll take it down if you don't want it used.)