Housui Yamazaki [山崎 峰水] is a Japanese manga artist. He also has two other pseudonyms [Yamazaki Hiroshi:山崎 浩], [Hiro Yamazaki:ヒロ 山崎] He wrote and illustrated the three volume Mail series in 1999-2002, …
Various is the correct author for any book with multiple unknown authors, and is acceptable for books with multiple known authors, especially if not all are known or the list is very long (over 50).
