After graduating from Keio University, Yamamoto debuted as an actor in "Manatsu no yo no yume" (A Midsummer Night's Dream) costarring with Yoshiko OKADA in 1920.
慶應義塾大学卒業後の1920年に『真夏の夜の夢』で岡田嘉子と共演して俳優デビューする。