Ambiguous tag. 加藤 (Katou) is a Japanese surname.
- For the artist with the Pixiv URL "katou", see Katou Kaiou.
- For some potential artists named kato/katou: kato_* | *_kato | katou_* | *_katou
- For some characters named kato/katou: kato_* | *_kato | katou_* | *_katou
- For some copyrights named kato/katou: kato_* | *_kato | katou_* | *_katou