Hiroyuki Utatane(うたたね ひろゆきUtatane Hiroyuki) is a Japanese manga artist and anime director born on 15 June 1966 in Nagaoka, Niigata Prefecture, Japan. His wife is manga artist Ryō Ramiya. Utatane began his career with adult works such as Countdown. His more recent works have been seinen works such as Seraphic Feather and Heaven's Prison, though he continues to release some adult works as well.