Created a GalleryUnlock for this because editing the Profile Save was too much of a pain.
This is ONLY for Version 0.2.18.4, it might work with other versions too, but the gallery system is pretty static, so you would miss any new content.
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Just open the .jar in 7-Zip (WinRar might work, too), go to "com\majalis\screens\", delete everything that starts with "ReplayScreen" and insert the modified files.
PS.: There is currently a bug with the gallery where some AnimatedCG (Character Picture) would cover up the Scene Buttons. I tried to fix it, but gave up a few minutes in after realizing how upright stupid the whole system is. The dev draws the buttons too late, which is why they get covered up.