I know this thread is over a week old, but the password is in the terms of use on the kuzutokaze website (in English). It seems the voicebank you had was either Toorochi, or Konagusuri. Both have the same password.
Happy birthday Alta! Here's the voicebank I've been working on for her! There are some weird quirks in it and some things might be missing, but overall it's exactly how I always wanted Alta to sound.
I also updated her showcase item to reflect this new voicebank...
Hello, Lycoris' English voice is now released! Check the video and description for more info.
Link to showcase item: https://utaforum.net/showcase/lycoris-grey.900/
I got into Vocaloid when I was 13, and UTAU when I was 18. I had a strong bias against UTAU for a while because it seemed unprofessional and unpolished. Now that's exactly what I like about UTAU :D