I had the same issue but found this fork and it works great for Japanese novels! Also I agree the dictionary isn’t the best but it’s serviceable… on my old kind

I had the same issue but found this fork and it works great for Japanese novels! Also I agree the dictionary isn’t the best but it’s serviceable… on my old kindle oasis it has been really transformative. https://github.com/m-tky/koreader-tategumi https://github.com/m-tky/koreader-tategumi Manga works but the screen size is a bit awkward imo.