This should not have happened. To avoid this conflict, I am providing this update for free to recent purchasers. That means that if you purchase v1.20 PC, you should receive 1.21 PC for free. Please send me your email address. I'll double-check and send you an email with the game. You can type your email like this > "after****ces@gmail.com" for privacy reasons.
My patrons will be disappointed. Because they paid monthly, regardless of whether there was an update or not. That is fairly common in the ongoing development of visual novel games. I wanted to do something nice for my itch.io fans. That is why I am providing one free update. However, if you are short on cash, I recommend that you wait until the update is free. Because 1.22 might not be available for free.