It would be cool to include some kind of statistics page in the game itself (showing things like what you included in the "Numbers Fun" devlog a month ago)
Actually, maybe it's not working properly even if you use the mouse... It seems you always need to go out of the full-screen view and back in on the image you want to save.
When viewing the vault, and scrolling between summons in full-screen view using the keyboard arrow keys, it doesn't properly update the "Save to Disk" button - it will save the image with the correct filename but with the image of the summon you originally clicked to enter full-screen view, not the one you are currently viewing. If you use the mouse to click the left or right arrow on the screen instead it works correctly.
(Also it would be nice to have it remember the last saved-to directory rather than always defaulting to the location of the exe, but that's a feature request not a bug)
When you're viewing a Waifu from the vault it would be nice to be able to scroll to the previous or next one in the vault using the arrow keys. Also, it would be good if the three buttons at the bottom could auto-hide so that they don't cover the bottom part of the picture.
