Witch Life in a Micro Room manga volume 4 features story and art by Akitaka.

After being promoted to B-rank witches, things were meant to be smooth sailing for Madge and Ririka—more jobs, more money, less problems. But when Madge's formidable sister appears, determined to drag Madge back to the village, Ririka ends up in a witch's duel against the incredibly powerful fire witch! Their partnership hangs by a thread!!