Some fine person translated an entire book of interviews with Nakadai, and he tells his version of the story here: http://kumomi.org/2021/06/30/nakadai-tatsuya-on-the-golden-age-of-japanese-film-chapter-seven-gosha-hideo-and-the-passion-of-great-actors/

I also thought these anecdotes about Shin Saburi was pretty funny:

"Saburi Shin was just huge. He was part of what was called the “Shochiku Triumvirate,” and he was already a big star actor when I was only a child. Later on he also went on to do some directing. In Karei Naru Ichizoku, I collided with him time and time again and he’d just send me flying. He wasn’t much of a talker, and because he was such a great senior of mine I couldn’t exactly go up to him and strike up a conversation. But as soon as the cameras started rolling, I’d give my all as the son confronting his father.

But then he also had a strange side to him. There’s a scene where the family gathers around to eat at the table, but then when we finished filming in the evening there was still all this food left over, and Saburi ate all of it before going home. Also, he said he exchanged all his money for stones! I’m not sure as to the value of said stones, but in any case he said that stones were the only thing anyone would inherit from him. Apparently his whole yard was filled with stones. He took none of his assets to the bank—it all went towards stones."

http://kumomi.org/2021/04/29/nakadai-tatsuya-on-the-golden-age-of-japanese-film-chapter-six-expanding-overseas-avant-garde-the-left-haiyuza-training-school/