Re:ZERO Starting Life in Another World Novel Volume 15 is written by Tappei Nagatsuki with illustrations by Shinichirou Otsuka.

Roars echo across Roswaal Manor as Elsa and Garfiel finally collide. Leaving this dire foe to his dependable ally, Subaru finally reunites with Beatrice at long last. Simultaneously, Emilia heads back into the tomb to confront the Unknowable Present: a world portraying impossible happiness that she must see through and resist. In this loop where terrifying demon beasts are lurking behind every corner while his allies are scattered across the map, Subaru must cut open a path to the future for everyone once again!