pretty sure someone found "Serra 塞拉" here https://forum.ripper.store/post/188137
i also made a torrent for faster downloading that contains Serra and another avatar from that avi world. here is the google drive for the torrent i made https://drive.google.com/drive/folders/1DScrarGOIbhneZQk78zOusAjnG1Fmt7M?usp=drive_link

just to warn you the decompressed size of the files is a little over 30GB and you will need 7Zip to decompress it. i only made this torrent because of the horribly slow speeds of Pixeldrain after you hit the file size cap. i have a gigabit connection so it should be pretty quick assuming the torrent is working correctly. I will seed the torrent for 7 days unless someone requests me to seed longer