Sora no Kane no Hibiku Hoshi de
空ノ鐘の響く惑星で
A massive floating structure called the "auspicious pillar" exists in the sky, and during a specific time of year, sounds resembling bells can be heard across the planet. It is said that a young girl appears near parts of the pillar around midnight. To look into this claim, Ferio visits the structure and encounters a strangely dressed girl. Their meeting marks the beginning of a story shaped by their interaction.