Nagomi Yone, the late grandmother of protagonist Nagomi Yui, narrates the film "Eiga Delicious Party♡Precure Yume Miru ♡ Okosama Lunch" and its series. Her voice provides thematic guidance through the recurring motto "food brings smiles," reflecting core themes of gratitude and sharing. Yone's philosophies consistently influence Yui’s decisions during conflicts and emotionally significant moments.

As a foundational figure in Oishiina Town, Yone managed the family diner with kindness and culinary wisdom. Her legacy endures through Yui’s recollections of her teachings, particularly during pivotal events like Yui’s childhood encounter with Cait Sith. In this key movie plot element, Yui prepared a children’s lunch for him amid his sadness—a memory later connecting to Dreamia theme park’s emergence and secrets.

During the film’s climax, Yone’s narration contextualizes shared meals and unity as the characters’ combined emotions enable Kome-Kome’s miracle. Her presence underscores intergenerational bonds and the enduring impact of kindness, exemplified by Yui’s past promise to remake lunch for Cait Sith, which resolves his character arc.

Yone’s narration remains consistent with the series’ depiction, emphasizing food as a conduit for emotional bonds and community without direct plot interaction. The film introduces no new developments or background beyond her established television series role.