Kizuna AI is the name most histories use for the start of the modern VTuber boom. She debuted in 2016 as a “Virtual YouTuber”: a Live2D character who uploaded videos and, later, appeared live, instead of a fully pre-rendered CG idol.
Why she matters
Before Kizuna AI, virtual idols already existed. What stuck was the YouTuber framing — intros, “hai domo,” collabs, and a character that could ship videos on a creator schedule. The label VTuber spread from that channel into agencies, indie scenes, and English-speaking Twitch.
If you are mapping terms, the VTuber wiki covers Live2D vs 3D. Her original look is a Live2D model: illustration plus rig, not a full 3D concert avatar.
Model and software
Kizuna AI’s public face was 2D tracking long before VTube Studio became the indie default. The pipeline is still the one in the software guide: art → rig → tracking app → encoder. Beginners copying her look should commission a Live2D model, not try to stream from Cubism.
Career notes
The character was produced under Activ8 / .LIVE, then went through hiatuses, project changes, and a much quieter public schedule. Treat this profile as a historical index, not a “live now” tracker. For how agencies later industrialized the format, read agencies vs indie.
Official videos and socials remain the source of truth; this page does not host her copyrighted model art.