Re:ZERO Starting Life in Another World Novel Volume 12 is written by Tappei Nagatsuki with illustrations by Shinichirou Otsuka.

It seems no matter how many times Subaru returns to Sanctuary using his ability Return by Death, nothing ever goes the same way twice. Unexpected things keep happening, and the truth he learns threatens to crush him. He'll have to get backup if the world is to have any hope of avoiding the impending whiteout...