Magical Girl Hiro and Witch Emma, Star-Crossed Lovers

Nikaido Hiro lost her parents to a witch, and became a magical girl, devoting herself to fighting what should not exist: witches. One day during her career as a magical girl, her childhood friend and most important companion, Sakuraba Emma, asked if they could live together. Although her friend's flushed face seemed a little strange, Nikaido Hiro happily agreed. In this world, witch factors have spread across the globe, and witches and corpses keep appearing. As a magical girl, Hiro grows more and more exhausted. But whenever she comes home, she can always see Emma's smiling face. That is why Hiro firmly believes, deep down, that Sakuraba Emma is the most rightful existence of all. But their happy days don't last. At Emma's birthday party, Hiro discovers Emma's secret. Sakuraba Emma is the world's mistake, the most incorrect existence, and the mortal enemy of magical girls. Sakuraba Emma is a Great Witch.

... [The Witch Trials of Magical Girls] + [Magical Girls]. The characters from Witch Trial are the main focus. Characters from A Good Librarian Like a Good Shepherd and Summer Pockets also appear.