Based solely on her appearance in *Eiga Precure All Stars New Stage 3: Eien no Tomodachi*, Cure March appears as a member of the Smile Pretty Cure! team within the larger ensemble cast. She joins the collective battle against the film's antagonist alongside the other Pretty Cures. Her interactions primarily serve the group dynamic, with the film focusing on the combined effort rather than individual character arcs or backstory exploration specific to Cure March within this movie context. No new background details or character development unique to Cure March are presented. Her role remains consistent with her established personality, abilities, and narrative portrayal from *Smile Pretty Cure!* and its direct sequels, without advancing her individual story or providing additional insight into her personal history or relationships outside her core team.