“First of all, thanks for having us back. It’s always an honor to come to Japan. It’s wonderful to be here with this film,” Ryan said at a press conference held at Mandarin Oriental, Tokyo on Dec. 3.

He divulged that after reading James Hansen’s book “First Man,” he realized that “I know nothing about Neil Armstrong or his wife Janet and their family, and the extraordinary sacrifices that were made to make this mission possible.”

“It’s one of the greatest technological achievements in history but the emotional journey that the people involved went on was quite heartbreaking,” he went on.

The “La La Land” star admitted that playing Armstrong “was an extraordinary opportunity but an even bigger responsibility.”

“I had an incredible amount of help. Neil and Janet’s sons were involved. It was a real team effort,” he said.

As for Chazelle, the film is “a balance between the space mission and the intimate emotional life of Neil and his wife Janet.”

Joining the two at the press conference were former Japanese astronaut Naoko Yamazaki, who boarded the Space Shuttle Discovery in 2010 and ZOZO Chief Yusaku Maezawa, who is scheduled to take a trip to the moon in 2023.