Thank you for your question! I am sorry if I have made you feel uneasy. 💦
First of all, the gallery does not have a direct download feature. To be honest, however, it is technically impossible to completely prevent people from saving images via screenshots, etc., and this is a troublesome issue common to all images posted online...!
With that in mind, I would like to introduce a few things you can do to protect your original artwork and original elements. 🙏
① For important original artwork, I recommend posting them to multiple platforms—such as pixiv, X, or your personal website—at around the same time. If the ownership of rights becomes an issue later, you can cross-check the posting dates, which will serve as evidence that you are the original creator.
② For works you especially want to protect, you also have the option of choosing not to post them to the gallery at all. Since you can download the images you generate from your "My Page," you can keep them saved on hand without making them public. ◎