On March 14, 1975, in "Sunrise studio" as a trigger the production of "Reideen Hero", Hiroshi Hasegawa had a check finishes from its very beginnings has established the "studio Dean Co., Ltd." That started the production business since 1982. Initially, the cooperation has been Shinei video production such as "monkey golf pro" and "Doraemon", came to be known in his name to the actual production fr
om Studio Pierrot "Urusei Yatsura" from April 1984 is later taken over. Until the early 1990s, was responsible for the actual production work, such as film Kitty "Supadzugan" "Ranma 1/2" "F-F" "Maison Ikkoku" since then. In April 1994 to make changes in the composition of the Corporation in 2005, 30 anniversary of establishment, moved to new premises in January 2006. April 1, 2011, Group Co., Ltd. now and business alliance. September 30, the same year, Representative Director Hiroshi Hasegawa, resigned. Was appointed an advisor to the group timer.
