Rachel Roberts is the author of Avalon: Web of Magic, including Secret of the Unicorn, Cry of the Wolf and All That Glitters. The Warlock Diaries is her first manga work. Roberts, who lives in Southern California, enjoys meeting her readers through her website, avalonmagic.com. Shiei is the artist for Aoi House. She is the most prolific Original English Language manga artist in the US, having completed 4 volumes of Aoi House and 6 volumes of Amazing Agent Luna so far. Shiei resides in Southern California.