Souichirou Watase (渡瀬 草一郎, Watase Sōichirō) (born 1978), is a Japanese author from Yokohama city, Kanagawa prefecture. 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. He is also the creator of Parasite Moon and Rinkan no Madōshi.
Source: “Soichiro Watase”, English Wikipedia (CC BY-SA 4.0), excerpt