Mushoku Tensei: Jobless Reincarnation Vol. 9

After a magical disaster saw his family thrown all across the world, Rudeus is determined to bring them all back together. The next step just might involve storming a castle, and Rudeus isn't about to back down from the challenge. But how will his half-sister Aisha feel about a reunion with a brother who never came for her--a brother she's never met?