Clarisse is the direct descendant of the founder of Alchemy’s younger sister, and is the daughter of Promethia and Harold. Their line specializes in alchemic decomposition, a mastery that Clarisse outshines even her family head in. Despite that, Clarisse had trouble with basic forms of alchemy on top of having incredible difficulty studying. Though Clarisse’s parents did love her dearly, their strictness and dedication to the family’s goal was a point of contention between them and their daughter.
(Source: Granblue Fantasy Wiki)