Souichirou Watase (渡瀬 草一郎, Watase Sōichirō) (born 1978), is a Japanese author from Yokohama city, Kanagawa prefecture.[1] He made his debut with the fantasy novel Onmyo no Miyako (陰陽ノ京, Onmyō no Miyako) in 2001, after winning Gold at the 7th Dengeki Game Novel Prize in 2000.[2][3] He is also the creator of Parasite Moon and Rinkan no Madōshi.[4]