Mushoku Tensei Series. Collection Set of 6 Books, Jobless Reincarnation Light Novel Set Vol. 21-26 by Rifujin Na Magonote
Light Novel Vol. 21 9781638589785
Light Novel Vol. 22 9781685796365
Light Novel Vol. 23 9781685796457
Light Novel Vol. 24 9781685794705
Light Novel Vol. 25 9781685795719
Light Novel Vol. 26 9798888434352

Publisher Marketing:
WHERE IS ZENITH?
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.

Biographical Note:
Rifujin na Magonote is a Japanese writer best known as the author of the light novel and manga series Mushoku Tensei: Jobless Reincarnation.