Belle grew up as an orphan. Her path first crossed with the protagonist when she aided his group, an act that secured her position as one of his personal bodyguards. She now travels consistently with the protagonist as part of his protective detail. Belle shares a romantic relationship with Emil, a fellow orphan who also serves as a bodyguard. Her origins lie within a community of orphaned children; after the protagonist extended aid to this group, Belle and several other orphans chose to join his entourage, seeking both protection and ongoing support.