在这部ゲキ×シネ「蜉蝣峠」片中,「劇団☆新感線」による演劇を映画館で上映する「ゲキ×シネ」の7作目。演出をいのうえひでのり、脚本を宮藤官九郎が担当。主演は古田新太、共演に堤真一、高岡早紀、勝地涼、木村了、梶原善ほか。自分の名前以外覚えていない男・闇太郎は、元旅役者の銀之助に誘われて蜉蝣峠を下っていた。やがて、極道者たちが勢力争いを繰り広げる荒廃した宿場町にたどり着き、闇太郎は自らの過去と対峙する。
Piquant! Lives of daring outlaws literally out of law and order of this world. The man has no past. What he knows is his name Yamitaro only. He arrives at a totally ruined inn town at the bottom of the Kagerou hill to which he was lured by Ginnosuke, a former strolling performer. Yamitaro faces his past in the shattered town where mobs are in power struggle day and night. That was the moment when the first drop of blood starts to form a mighty river. A must see period drama in the style of GEKIDAN SHINKANSEN X KUDOKAN performed by ultra gorgeous cast! *"KAGEROU TOUGE" literally means "a mountain pass named Kagerou".
