Yolda, an elder and authority in Neutral City, explains the city's purpose to Toola as both bridge and barrier between the Forest and the militaristic nation of Ragna. She emphasizes the necessity of coexistence between humans and the sentient Forest, framing Neutral City as a diplomatic entity striving for balance amid conflicting ideologies.

She provides critical exposition on the central conflict, articulating the grey-and-gray morality between Ragna's desire to destroy the Forest and the Forest's demands on humans. This perspective underscores the narrative's exploration of compromise versus extremism and reinforces Neutral City's philosophy of sustainable interdependence, contrasting with Ragna's restorationist goals and the Forest's protective instincts.

Through her interactions with Toola, Yolda acclimates the displaced protagonist to the dystopian reality, offering historical and political clarity about the transformed world. Her role remains strictly advisory and expository, focused solely on Neutral City's ethos without personal character development or direct involvement in the primary action sequences involving Agito, Toola, and Shunack.