Reincarnation of the Strongest Exorcist in Another World (Manga) Volume 8

After rescuing Amyu from the imperial palace, Seika decides it isn't safe to remain in the empire any longer. Relying on Fiona's connections, the two head to the free city of Rakana, where they reunite with Yifa and Mabel. There, the group meet with Rakana's leader, Cyrus, and begin their new lives as adventurers. There's lots to do: learn the adventuring ropes, make new friends, and-most pressingly-uncover the mystery of Rakana's dungeons.