Born in 1963 in Yamaguchi Prefecture, Japan. After graduating from Tokyo University, Ichiyama joined Shochiku in 1987 and started to work as a producer for films such as Nowhere Man (1991) by Naoto Takenaka and three films by Hou Hsiao-Hsien (Good Men, Good Women (1995), Goodbye South, Goodbye (1996) and Flowers of Shanghai (1998)). In 1998, Ichiyama joined Office Kitano and started to produce films by Asian filmmakers, including Jia Zhang-ke (Platform (2000), Unknown Pleasures (2002), The World (2006), 24 City (2009), A Touch of Sin (2013), Mountains May Depart (2015), Ash is Purest White (2018)), Samira Makhmalbaf (Blackboards (2000)), Abolfazl Jalili (Delbaran (2001)). Apart from his activity as the producer, he founded the film festival, TOKYO FILMeX, and has been acting as the director until 2020. In 2021, he was appointed to be the programming director of Tokyo IFF. Since 2013, Ichiyama serves as a visiting professor at the Tokyo University of Arts.