Autor: Tappei Nagatsuki
Liczba tomów: 2
Premiera: 14 listopada 2017
Opis: The first Re:Zero Ex novel spinoff of Tappei Nagatsuki's Re:Zero novel series focuses on Lugnica king candidate Crusch Karsten, her knight Ferris, and a boy who had a profound influence on their lives. That boy is Fourier, the fourth prince of Lugnica. The second Re:Zero Ex novel focuses on Wilhelm.
LN-ka z 2015 roku, wydana przez wydawnictwo Kadokawa.