Ryōsuke SAEGUSA is the executive vice president of Cork Inc., the literary agency. He started to work in one of the most authoritative Japanese publishers, Kōdan-sha (講談社), in 2001. He worked at the editorial department of a comic magazine, Weekly Shōnen Magazine (週刊少年マガジン), until 2005, at the first literary publishing department until 2008, at the editorial department of a literary magazine, Gunzō (群像), until 2012, and then at the publishing department of paperbacks. He resigned from the company in September 2012 and established Cork Inc. in October.