Mushoku Tensei: Jobless Reincarnation (Light Novel) Vol. 7

Alone and forlorn, Rudeus arrives at the city of Rosenburg to search for his mother, Zenith. Despite his attempts to focus on the task at hand, Eris' absence weighs heavy on his heart, and so Rudeus gambles on a dangerous new venture to distract himself from his newfound loneliness--accepting an A-rank job all by himself.