Ambiguous tag.
- For the artist formerly tagged here, see Ketsuago Oshou (Kei5)
- For the artist formerly tagged as Kei5 (Pixiv), see Kei (Aoddoa).
- For some potential artists named kei5: kei5_* | *_kei5
- For some characters named kei5: kei5_* | *_kei5
- For some copyrights named kei5: kei5_* | *_kei5