@mia Yeah tbh I should really ask them for the data. Thats a good point. J-Novel Club has an API to get all that info so that was a piece of cake for a contributor lol.
So I guess just straight up asking the likes of Yen Press and Seven Seas might not end to bad.
The idea was just to grab the data and then donate that to inventaire. I would have tried openLibrary first but they only really have a mailing list if you want to ask stuff so....
I do have quite a lot of stuff already atleast:
https://codeberg.org/stefan230/Light-Novel-Database