I don't have the definite answer to who Jiro ends up with. The manga could have many twists and turns before revealing the final pairing. It's all part of the excitement of following the story!
In the manga, Jiro and Akari do end up together. The plot builds up their connection gradually, with various challenges and moments that strengthen their bond.
Geralt ends up with Yennefer. Their relationship is complex and filled with passion. They have a deep connection that has been through many trials and tribulations throughout the story. They care for each other deeply despite their differences and the various challenges they face in the world of the Witcher. It's a relationship that is central to much of the story's emotional depth.