Set on the remote and fictional southernmost island of Japan, Okunotorishima, Sora wa Sekai no Hitotsu Yane is a slice-of-life manga by Tsuruta Kenji, known for his work Spirit of Wonder. The story centers on the daily existence of the island's small airport and its staff, primarily focusing on the runway chief, Shitodoba Seresso. The narrative follows her mundane and relaxed life alongside her new young male assistant, as they manage the quiet and isolated airstrip surrounded by the beautiful azure sea. Rather than being driven by a strongly defined, conflict-heavy plot, the manga functions as a mood piece, emphasizing the laid-back atmosphere and the charm of its setting over dramatic events. A notable characteristic of the work is its heavy reliance on visual storytelling, with a significant portion of the volume dedicated to full-color illustrations that capture the serene environment and the everyday moments of its characters.