Auteur's Abecedarium

You may be looking for the titular short story.

A depiction of what was believed to be Auteur's thirteenth reincarnation writing his abecedarium, drawn by Jayce Black. (PROSE: Auteur's Abecedarium)

Whilst imprisoned within the Shadow Spire, Auteur wrote an abecedarium.

History

After Auteur found himself dying in a crumbling reality of his own creation, three Retconning Crocodiles offered him his resurrection in exchange for a narrative that would unravel their archenemies, the Crew of the Copper-Colored Cupids. With no other choice, Auteur agreed, deciding upon writing an abecedarium, and the Crocodiles regressed him to when he was sealed away inside the Shadow Spire. After the deed was completed, the Crocodiles upheld their side of the deal, restoring Auteur to life, but in a cruel trick, they left him in the crumbling reality. (PROSE: Resurrection of the Author)

On Christmas, 2020, in the Cupid Homeworld, Carter-1277 discovered a mysterious, wrapped christmas present. He summoned Lord Thymon, a reformed time-demon, and requested his opinion. Thymon was understandably suspicious of the abecedarium, however Celebration-665 (who was the head of the Department of Festivities), regarded the abecedarium as a Christmas miracle, and in his happiness, he read from the abecedarium to the other cupids. Celebration-665 read on unpeturbed, despite the contents getting more and more strange with a distress message imbedded within the book. After he concluded, the cupids were left unimpressed, and Bibliophile-962 took the book and stored it deep inside the Cupid Archives. (PROSE: Auteur's Abecedarium)