Mushoku Tensei: Isekai Ittara Honki Dasu - Shitsui no Majutsushi-hen  

Mushoku Tensei - Depressed Magician, 無職転生 ～異世界行ったら本気だす～ 失意の魔術師編

Following his separation from Eris, Rudeus experiences deep sadness and decides to journey to Rozenberg, the second city in Basherant's Principality. His goal is to locate his missing mother, Zenith. In his desperation, he attempts to undertake a significant quest on his own in order to establish his reputation. However, by happenstance, he is drawn into working alongside a group of B-rank adventurers known as Counter Arrow. Among them is Sara, a young woman who bears a striking resemblance to his former love, Eris.

Mushoku Tensei: Isekai Ittara Honki Dasu - Shitsui no Majutsushi-hen adapts the seventh volume of the original light novel.