Custum Tamago -final- -witchuus- «Secure | RELEASE»

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Based on naming conventions in the doujin (independent) music and rhythm game scenes, this is almost certainly a song from the series (often romanized as Custom Tamago ) by the artist Umaru-chan / witCHuus (also stylized as witCHuuS). Custum Tamago -Final- -witCHuus-