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KUUSOU

A cross-dimensional virtual music unit composed of CIEL (virtual) and Sooda (real), themed around purity and softness.

KUUSOU
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Overview

KUUSOU (空爽) is a cross-dimensional virtual music unit formed on January 14, 2026, composed of virtual singer CIEL and real-world artist Sooda. The unit’s concept centers on the theme of “purity and softness” (清純とやさしさ), deliberately blurring the boundary between the virtual and the real to create a new mode of musical expression.

The pairing is significant within the Kamitsubaki ecosystem: CIEL, a virtual character represented by blue hair and a narrative of looking upward for the first time, meets Sooda, a grounded real-world creator. Their collaboration embodies KAMITSUBAKI STUDIO’s ongoing exploration of “cross-dimensional” (次元横断) art — where the line between character and person, screen and stage, becomes intentionally ambiguous.

Role and Creative Position

KUUSOU occupies a unique structural position in the Kamitsubaki roster as a unit that is explicitly defined by the virtual-real divide it bridges. The name 空爽 combines 空 (“sky” / “emptiness” / “virtual”) and 爽 (“refreshing” / “clear”), evoking a feeling of openness and clarity. The unit’s identity is not about hiding the duality of its members but about making that duality itself the artistic statement — two voices from different dimensions meeting in shared emotional space.

Activity History

  • January 14, 2026: KUUSOU was formed by CIEL and Sooda, releasing the debut single “Toumei Ryusei Rhapsody” (透明流星ラプソディ, “Transparent Meteor Rhapsody”).

Representative Works

  • Debut single: “Toumei Ryusei Rhapsody” (透明流星ラプソディ)

See also:

Related Projects / Setting

KUUSOU represents a key experiment in KAMITSUBAKI STUDIO’s broader “cross-dimensional” framework. By pairing a virtual singer (CIEL, who herself was discovered through the studio’s audition program “Kamitsubaki-shi Ijuu Teijuu-ka”) with a real-world artist (Sooda), the unit serves as a living test case for the studio’s vision of art that transcends the virtual/real boundary. The unit’s formation is closely tied to CIEL’s return from hiatus in late 2025, suggesting a narrative arc of reconnection and new beginnings.

References

  • CIEL’s activity history and KUUSOU formation announcement