Aside from reposting on Danbooru, training usage is explicitly allowed without original creator's permission by Japan law. https://storialaw.jp/en/service/bigda

Aside from reposting on Danbooru, training usage is explicitly allowed without original creator's permission by Japan law. https://storialaw.jp/en/service/bigdata/bigdata-12 https://storialaw.jp/en/service/bigdata/bigdata-12 Possibly that's why artists taking down from Danbooru , it's their right.