Is there a way to mass import box art into Daijisho?

I know Daijisho automatically scrapes, which is cool, but I'm not always crazy about the way it scrapes box art. I have an emulation station setup on my PC and I'd really like to copy the box art images from there and import them into Daijisho, but I can't find where those images are stored on my Android device (Retroid Pocket 2+, if it matters).

I know you can fix them individually, but it'd be way easier if I could do it in bulk.

Does anyone know how to do this or if it's possible?

EDIT: Okay, it looks you (kinda) can do it! You have to go one platform at a time, but you can move your pictures to your device's storage, hit the edit icon on a platform in Daijisho, and select "Import Preview Media" at the bottom. You will have to select Box Art, Title Art, and Screenshot folder seperately for each system, but it's still a lot faster than doing individual games.