Arifureta: From Commonplace to World's Strongest (Manga) Vol. 5

With all the trials of Miledi Reisen behind them, Hajime and company set out to conquer all the labyrinths of the ancient Liberators. Along the way, he runs into an unexpected reunion--someone who recognizes Hajime from his old life back in Japan. But the new Hajime is a man on a mission, and not even the arrival of an ancient, deadly dragon can keep him from his goal!