The problem is compounded by the fact that the largest asset sizes in sprites are never represented in CGs.
However, the current version built in Unity is 3.12 so I don't know if the art has been fully updated to fix this, but there have been half a dozen new CGs added.
JP trial and full versions can be found here https://tempoko.booth.pm/
Also, you might be looking at 20 hours to unlock all CGs and I couldn't find an online gallery of the CGs with or without variation anywhere. (some scenes are animated)