That Time I Got Reincarnated as a Slime: Trinity in Tempest manga volume 7 is based on the work by Fuse and features story and art by Tae Tono with additional illustrations by Mitz Vah.

The battle against the Demon Lord Clayman has come to an end. The leaders of Tempest, Eurazania, and the Forgotten City of Dragons are busy dealing with the aftermath when they receive troubling news from Claire of Fulbrosia. Frey and Carrion have both formed an alliance with Milim Nava. Now that the trinity and their respective homelands are united, the three warrioresses must adapt to a world that's changing around them.