Unknown Caller (GKS02)

Tracklist

Unknown Caller is the second single by Gah#Kyumi with a overall ghostly vibe.

This song features SynthVloid GUMI and UTAUloid Tsukumo Kai.

This song have a lot of mysterious elements mixed with analog horror.

This song marks the debut of GUMI on Gah#Kyumi's discography.

Spotify

Youtube

GKS02 began in January 24th 2026 and was quickly finished in January 25th 2026 and was released on 31st January.

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