Arashi was convinced of Yamanaka's worth by the screenplay for 'Muttsuri Umon' and gave him his first directing job in 1932 with "Iso no Genta: Dakine no Nagawakizashi" (Genta of rocky shore sleeping with a long sword) adapted from a play by Shin HASEGAWA.
「むっつり右門」の脚本でその真価を確信した嵐は1932年（昭和7年）、長谷川伸の戯曲を脚色した『磯の源太抱寝の長脇差』を監督第1作として発表させる。