1 source 5m ago
Bonten Soyogi Will Stream as an AITuber with Yuki Kaji on November 21
Voice actor Yuki Kaji's AI character Bonten Soyogi will appear as an AITuber in a live stream on November 21, 2026, starting at 16:00 on the project's official YouTube channel.
Reporting from 1 source: KAI-YOU.
Why it matters
Soyogi Fractal's previous outings were staged formats, a 3D live at Tokyo Garden Theater in March 2026 and a conversational app, so a broadcast where Kaji and the character trade words on the spot puts the voice AI in front of an audience without a script to fall back on.
Key Facts
- Bonten Soyogi will stream as an AITuber on the official YouTube channel from 16:00 on November 21, 2026.
- The birthday program pairs the AI character with voice actor Yuki Kaji in real-time conversation, with game commentary also planned.
- The mini album Butterfly Effect is released the same day with five songs by HoneyWorks, Umya, R.O.N, Moimi Kashii and Yashikin.
- Soyogi Fractal launched in 2023 to commemorate the 20th anniversary of Kaji's voice acting career.
- A 3D live, Bonten Soyogi 1st EXPO 0rigin, was held at Tokyo Garden Theater in March 2026.
The birthday program pairs the character with Kaji in real-time conversation, with game commentary planned and the game title withheld until the day. The second half puts Soyogi on stream alone, and a five-song mini album, Butterfly Effect, arrives the same day.
Soyogi Fractal launched in 2023 to mark the 20th anniversary of Kaji's voice acting career, built around a character drawn from his own voice and words. The November 21 program is billed as Bonten Soyogi's second birthday festival.
The second half hands the stream to Soyogi alone, and new information is scheduled to be announced there. Butterfly Effect carries five songs, handled by HoneyWorks, Umya, R.O.N, Moimi Kashii and Yashikin, with jacket art by HoneyWorks member Yamako. The music video for the Umya-produced opening track, Ikiro! Swampman, goes out alongside the album.
Written with AI by Yomimono from the 1 cited source below, including Japanese-language reporting where cited. See our editorial policy.
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