A story that unfolds completely differently from the main Re:Zero story. This is an alternate timeline in which, at the age of seven, Emilia's powers did not run out of control, and she was taken away by the Witch of Vainglory to become an Archbishop of Sin. As a result, the story takes place about 80 years before the main story. Subaru will appear 80 years early, but his role and Return by Death have no effect on how the story unfolds. Please consider this before reading if that isn't to your taste.
PS: This story depicts Emilia growing up normally without being frozen, then awakening a century later. Reading the original novel up through the Sage's Tower arc will make for a better experience.
