Mushoku Tensei: Jobless Reincarnation Novel Volume 21 was written by Rifujin Na Magonote with illustrations by Shirotaka.

Zenith—Rudeus’s mother—has been kidnapped. Rudeus runs himself ragged searching for her in every corner of Millishion, following his late father Paul’s orders to protect her at all costs. Ever on the back foot and outmaneuvered at every turn, Rudeus struggles to break through adversity and bring his mother back, safe and sound.