Lubart Valentz is a traveling merchant in his late forties who appears as a supporting character in the anime adaptation. He is the father of Klaudia Valentz and makes his living through a prosperous trading business. His primary motivation is to establish a continuous and consistent trade route to Kurken Island, specifically for the region's distinctive Kurken Fruit. To pursue this goal, he travels to Kurken Island alongside his daughter and temporarily takes up residence in the Old Town area of Rasenboden Village. Lubart is a cautious and caring individual, particularly when it comes to his daughter's safety and wellbeing. His protective nature is evident in how he manages their relocation and supervises Klaudia's interactions within the new community. Though his business ambitions drive the family's move, his decisions are often tempered by a desire to ensure a stable and safe environment for Klaudia. This fatherly concern gives him a warm and grounded presence in the story. His role in the narrative is that of a supportive parent whose actions influence Klaudia's connections with other characters, especially the protagonist Ryza and her friends. He does not undergo major personal transformation over the course of the series, but his steady, reliable demeanor provides a sense of security for his daughter and a baseline of normalcy in the village. While he is not a fighter or alchemist, his notable abilities lie in his sharp business acumen and his skill as a negotiator, which allow him to navigate trade relationships and secure the resources his family needs. He prioritizes Klaudia's happiness and growth, even when it means allowing her to form bonds that lead her away from his immediate oversight. As a character, Lubart Valentz represents the caring, pragmatic side of the adult world in the setting, balancing commercial ambition with genuine familial affection.