The previous page is sending you to https://seiga.nicovideo.jp/tag/%E3%83%9E%E3%83%AA%E3%82%A2%E3%83%BB%E3%83%93%E3%83%AC%E3%83%B3?target=illust_all.

 If you do not want to visit that page, you can return to the previous page.