Ao, a young woman living in a post-recovery Earth community at Cape Canaveral, Florida, becomes unexpectedly central when a photograph of her with children is discovered in a crashed capsule on the moon by Takeru, a resident of the lunar colony Eden. The image, inscribed "Earth is well. See you soon," provides vital proof of Earth's recovery, contradicting Eden's official stance that the planet is uninhabitable. This evidence directly motivates Takeru's journey to Earth. Ao resides within a self-sufficient, multicultural settlement. Her community actively maintains hope for lunar contact, launching annual message capsules toward the moon using refurbished or kitbashed rocketry. She embodies practical resilience, deeply involved in her community's daily life and adaptation to the environment. Her character design reflects this blend of cultural heritage and utilitarian post-apocalyptic life through braided hair, bead accessories, and practical attire like denim shorts. Following Takeru's arrival, Ao develops a relationship with him. After a two-year separation while he facilitates lunar emigration to Earth, their reunion marks a personal connection amidst large-scale societal shifts. Her name, meaning "blue" in Japanese, symbolically connects her to Earth's restored environment and oceans. Her background includes implied familial ties to space exploration, with one storyline suggesting her father may have been an astronaut on the Apollo 18 mission, anchoring her to humanity's interplanetary legacy. Ao personifies the revitalized Earth, acting as both a catalyst for challenging Eden's suppression of truth and an embodiment of planetary hope and renewal.