Kasukabe Tsumugi

Kasukabe Tsumugi (春日部つむぎ) is a Japanese VOCALOID developed and distributed by the Yamaha Corporation in collaboration with KasukabeTsumugi Project and the Virtual YouTuber Kasukabe Tsukushi. She was released via a limited lottery application in September 2023 for the VOCALOID β-STUDIO VX-β engine and later received an AI voicebank for VOCALOID6 in March 2025.[1] Previously, she received in November 2021 a Japanese talk voicebank for the VOICEVOX speech-synthesis software.[2] Her voice and illustrations are provided by the Japanese Virtual YouTuber Kasukabe Tsukushi (春日部つくし) from Virtual Sai...