TOKYO.- Pushing a walker through a television studio in central Tokyo this week, Tetsuko Kuroyanagi slowly climbed three steps onto a soundstage with the help of an assistant who settled her into a creamy beige Empire armchair.

A stylist removed the custom-made sturdy boots on her feet and slipped on a pair of high-heeled mules. A makeup artist brushed her cheeks and touched up her blazing red lipstick. A hairdresser tamed a few stray wisps from her trademark onion-shaped hairstyle as another assistant ran a lint roller over her embroidered black jacket. With that, Kuroyanagi, 90, was ready to record the 12,193rd episode of her show.

As one of Japan’s best-known entertainers for seven decades, Kuroyanagi has interviewed guests on her talk show, “Tetsuko’s Room,” since 1976, earning a Guinness World Record last fall for most episodes hosted by the same presenter. Generations of Japanese celebrities across film, television, music, theater and sports have visited Kuroyanagi’s couch, along with American stars like Meryl Streep and Lady Gaga; Prince Philip of England; and Mikhail Gorbachev, a former leader of the Soviet Union. Kuroyanagi said Gorbachev remains one of her all-time favorite guests.

Kuroyanagi, who jokes that she wants to keep going until she turns 100, is known for her rapid-fire chatter and knack for drawing out guests on topics like dating, divorce and, now, increasingly, death. Even as she works to woo a younger generation — Korean Canadian actor and singer Ahn Hyo-seop, 28, appeared on the show this month — many of her guests these days speak about the ailments of aging and the demise of their industry peers.

Having survived World War II, she broke out as an early actor on Japanese television and then carved out a niche as a feel-good interviewer with a distinctive style that is still instantly recognized almost everywhere in Japan. By fashioning herself into a character, rather than simply being the person who interviewed the characters, she helped establish a genre of Japanese performers known as “tarento” — a Japanized version of the English word “talent” — who are ubiquitous on television today.

“In some ways she really is like the embodiment of TV history” in Japan, said Aaron Gerow, a professor of East Asian literature and film at Yale University.

Kuroyanagi is distinguished above all by her longevity, but she was also a trailblazing woman in an overwhelmingly male environment.

When she started as a variety show host in 1972, if she asked a question, “I was told I should just keep my mouth shut,” she recalled in a nearly two-hour interview in a hotel near the studio where she had taped three episodes earlier in the day.

“I do think Japan has changed from that era,” she said.

She has championed the deaf and is a goodwill ambassador for UNICEF. Yet critics say that despite her pioneering career, she has done little to advance women’s causes. “She is an icon for prosperous, good-old” Japan, wrote Kaori Hayashi, a professor of media studies at the University of Tokyo, in an email message.

In the interview, Kuroyanagi did not dwell on the indignities of being the sole woman in many rooms. She said that in her 30s and 40s, men in the television industry asked her on dates or proposed marriage — offers that she implied were often unwelcome — and that she treated comments that might now be considered inappropriate as jokes.

In a society that she said retained “feudalist” elements in gender relations, she advised women to bootstrap their way through their careers.

“Don’t ever say you can’t do anything because you are a woman,” she said.

Although she said she entered television because she wanted to appear in children’s programming to prepare for motherhood, she never married or had children. “With a unique job, it’s better to stay single,” she said. “It’s more comfortable.”

Her first memoir, about her childhood attending an unusual progressive elementary school in Tokyo, “Totto-chan: The Little Girl at the Window,” published in 1981, has sold more than 25 million copies worldwide. Last fall, she published a sequel recounting the harsh conditions in Japan during World War II, when some days all she had to eat were 15 roasted beans, and she and her mother cowered in a dugout to shelter from air raids over Tokyo.

She said she was inspired to write the sequel in part by the images she saw coming out of Ukraine after the Russian invasion. Kuroyanagi plumbed her own memories of a wartime childhood, when her mother evacuated the family out of Tokyo to northern Japan.

“Even though I haven’t said war is bad,” she said, “I want people to understand what it was like for a child to experience the war.”

Kuroyanagi maintains a childlike quality herself. For the interview, she switched out of her signature onion hair bun, concealing her own hair under an ash-blond Shirley Temple-style curly bob wig, secured with an enormous black velvet bow.

It is all part of a nonthreatening persona she has cultivated over the decades. “She’s kind of adorable and cute,” said Kumiko Nemoto, a professor of management in the School of Business Administration at Senshu University in Tokyo, where she focuses on gender issues. “She doesn’t criticize anything or bring up anything political or say any negative things.”

That may be why, Gorbachev aside, Kuroyanagi has avoided interviews with politicians. “It’s too difficult for them to really tell the truth,” she said. “And I can’t make all of them all look good.”

Although sometimes compared to Barbara Walters, a groundbreaking American newswoman, Kuroyanagi does not push her interview subjects too hard. Producers ask guests in advance what topics they want to avoid or promote, and Kuroyanagi tends to oblige.

During the taping this week, her guest was Kankuro Nakamura VI, a sixth-generation Kabuki actor whose father and grandfather were also regular visitors on Kuroyanagi’s couch. Nakamura seemed to anticipate some questions about his family before they scrolled on to the teleprompter.

“What I put the highest priority on is that I control the situation with guests so that the audience will not think the guest is a weird or bad person,” Kuroyanagi said. “If possible I want the audience to realize, ‘Oh, this person is quite nice.’”

When Gorbachev appeared on her show in 2001, Kuroyanagi avoided politics. “It would have been a big deal for him,” she said. Instead, she asked him about his favorite poets, and he recited “The Sail,” by 19th century romantic poet Mikhail Lermontov. “I said I wished that if I asked such a question of any Japanese politician, it would be great if there was even one politician who could do that,” she said.

As she has grown older, she has forthrightly faced the challenges of her own generation on the soundstage at TV Asahi, the home of her show for 49 years. Before his death in 2016, for example, Kuroyanagi interviewed Rokusuke Ei, the lyricist of the song “Sukiyaki.” He appeared in a wheelchair, clearly showing symptoms of advanced Parkinson’s disease. Kuroyanagi frankly discussed his illness with him.

“Old people are definitely encouraged by her presence,” said Takahiko Kageyama, a professor of media studies at Doshisha Women’s College of Liberal Arts in Kyoto.

With her speech noticeably slowed, Kuroyanagi said she was motivated to keep working to inspire older audiences. “To show that a person can appear on TV until I am 100 with a body that is OK and my mind still works,” she said, “if I can show that, I think that would be an interesting experiment.”

This article originally appeared in The New York Times.