I don't know if you're aware of that, but it's worth mentioning that WindThunder has made the first 2 Heroine Anthem games available for free download from their official website:
https://www.heroineanthem.com/vocal_version/en-US/index.html
As far as I know, a Simplified Chinese version was also available but now it seems your best bet would be to check if it was saved in the Wayback Machine.
https://www.heroineanthem.com/vocal_version/en-US/index.html
As far as I know, a Simplified Chinese version was also available but now it seems your best bet would be to check if it was saved in the Wayback Machine.