Re:ZERO -Starting Life in Another World- (Light Novel) is a 23-book series with 23 released primary works first released in 2014 with contributions by Tappei Nagatsuki, 長月 達平, and 大塚 真一郎.
Note: Don't mark this as duplicate. The naming scheme of this is the one according to giodelines. After merging and mnaming the books as gicen below, point all the books to this series,