If you want a save file only for the CGs or scenes, then you don't even need a save file. Go into the Options/Configuration on the main menu, then the select the third option from the top, like in this image.
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System Setting 3. From those option, pick the bottom one and click the right hand button. This will unlock all CG's, animations, and scene replays.
I think the main reason so many people asking for 'full save plz' or '100% save' are ignored is because this game has 23 routes to it, so you need to be specific, on top of the fact you can just unlock everything right from the main menu if that's all you want the full save for. I hope this post help other people in the future too.