ru_(pixiv)
Ambiguous tag.
For the artist formerly tagged here, see kureha (lia0117).
For some potential artists named ru: "ru_* search":/artists?utf8=%E2%9C%93&search[name]=ru_*&search[sort]=Date&commit=Search | "*_ru search":/artists?utf8=%E2%9C%93&search[name]=*_ru&search[sort]=Date&commit=Search