The download for Hayato's route was available earlier, I downloaded it. But it seems like something was wrong, because I got an error when I tried to unzip the files, and then the game wouldn't open. So I'm guessing they pulled the download to fix it.
ah thank you guys for responding!! i... wish they made a update about why they temporarily took it down so first-viewers like me wouldn't be confused by the ordeal. a bummer, but considering we waited two years for any content in general i can wait longer haha.