>>19331
mostly manually.

I used one of the old waify captioners and the Joy cpation.
https://huggingface.co/spaces/fancyfeast/joy-caption-beta-one

Results were meh, so i manually remveod or added necessary captions.
Mos tof the images were taken form years of browsing guro chan, and from specialized guro chan threads, like decap threads on /g/ etc.