A Cosmosphere コスモスフィア, kosumosufia?) is the Soulspace of a Reyvateil, which is always stored inside a SH Server. Strictly speaking, it is the agglomeration of Static H-Waves that give form to the very soul of the Reyvateil, which is at its core composed of sounds, and it generally is recorded in the SH_RAM part of the SH Server, which is a device made of Parameno. Given the H-Wave absorption properties of said material, that makes it perfect to record, store and preserve the minds of the Reyvateils.