Kiyoshi Murayama (村山 靖, Murayama Kiyoshi) is a Japanese anime director, storyboard artist, and scriptwriter. He uses the pseudonym Kurige Katsura (桂 栗毛, Katsura Kurige) when working on adult works.
Hiroyuki Okuno (奥野 浩行, Okuno Hiroyuki) is a Japanese animator and anime director born in Senshu, the south-western part of Osaka Prefecture. He started as an animator at Nakamura Production. Currently, he is working a Studio Lings.