Manna Nonderaiko, a five-year-old orphan, resides with her adoptive guardian Riquinni Nonderaiko in the Kingdom of Honnêamise. She maintains a sullen and withdrawn presence, seldom speaking beyond brief utterances such as "There's the stars," "A star," or "Out there." This quiet nature traces back to a traumatic childhood in an abusive home, where she witnessed her biological mother suffer repeated violence at the hands of her husband. The experience left Manna emotionally scarred and reluctant to interact with others.

Clad in a simple green overall pants outfit, Manna observes her surroundings with silent detachment. Her sparse activities include playing with leashed insects and sharing meals with Riquinni and Shirotsugh Lhadatt. In a pivotal scene, she witnesses Shirotsugh attempting to sexually assault Riquinni. Manna awakens briefly but shows no reaction, returning to sleep as if undisturbed—behavior that highlights her desensitization to conflict.

Her relationship with Shirotsugh shifts over time. Beginning with indifference, it progresses to a tentative bond, marked by a rare smile she offers during their last meeting before his space mission. This brief connection contrasts her typical reserve, signifying a subtle emotional shift. Throughout the narrative, Manna primarily serves as an observer, reflecting societal hardships on children. Her background and development remain confined to the original film.