[1] He was featured in 11 films directed by Masaki Kobayashi, including The Human Condition trilogy, wherein he starred as the lead character Kaji, plus Harakiri, Samurai Rebellion and Kwaidan.

and The Sword of Doom), Hideo Gosha (Goyokin), Shirō Toyoda (Portrait of Hell) and Kon Ichikawa (Enjō and Odd Obsession).

Nakadai was working as a shop clerk in Tokyo before a chance encounter with director Masaki Kobayashi led to him being cast in the film The Thick Walled Room.

Nakadai continued to work with Kobayashi into the 1960s and won his first Blue Ribbon Award for his role in Harakiri (his personal favorite among his own films) as the aging rōnin Hanshiro Tsugumo.

He taught and trained promising young actors including Kōji Yakusho, Mayumi Wakamura, Tōru Masuoka, Azusa Watanabe, Kenichi Takitō and others.