git clone the entire thing.
git clone https://github.com/o7-Fire/nhentai-datascience.git
cd nhentai-datascience
git clone https://github.com/shadow01148/nhentai-data --depth 1
pip install -r requirements.txt
python idownloadedentirenhentaicdn.py
python makeocr.py
this project is somehow related with https://github.com/shadow01148/nhentai-data