"Banana Fish" character Ash Lynx seen in the New York Public Library Reading Room in a scene from the animated show.

"Banana Fish," scene from Episode 24 showing the death of character Ash Lynx at the New York Public Library.

A Japanese tour group arrived to see the New York Public Library room where a "Banana Fish" anime character died.

Japanese tourists are going bananas for the New York Public Library.

Fans of the anime series “Banana Fisshu” — or “バナナフィッシュ” — are flocking to the booklender’s flagship branch on Fifth Avenue to pay tribute to the main character, who dies sitting in a chair in the iconic Rose Main Reading Room.

The tourism company Kinki Nippon Tourist Kanto operates a $2,327 travel package that hits all the Big Apple locations featured in the series — called “Banana Fish” in English.

About 80 fans with the group toured the library Tuesday, snapping photos inside the Rose Room, where New York City teenage gang leader Ash Lynx dies, smiling and clutching a letter from his photojournalist friend Eiji Okumura.

Some even held up small cut-outs of the characters to take photos of inside the room. Fans of the series have also been leaving red roses at chair 378, where Ash perishes.

The unusual interest has been a boon for the library too — with Japanese tourists snatching up $30 miniature replicas of Rose Room chairs, staffers said.

“People have been asking about the reading room and have been going real hard buying all the little tourist gifts like the chair,” said gift shop worker Meghan R., who wouldn’t give her last name.

“We think Banana Fish is funny, but it’s bringing in money,” she said.

When a tour with the company visited Saturday, the gift shop sold 59 of the mini chairs, up 23% from the previous Saturday, a rep said, adding that some tourists also come in on their own to buy the keepsake.

“I have been in retail for 30 years and I’ve never seen a phenomenon like this,” said Krista Rauth, associate director of retail initiatives.

“People are buying the chair because the character sits in the chair, contemplates things in the chair, and dies in the chair,” she said.

The gift shop’s revenue for the 2019 fiscal year hit nearly $5.6 million, compared to $2.8 million five years ago — and workers are attributing it all to “Banana Fish,” which appeared as a manga from 1985 to 1994 and was rebooted as a TV series in 2018.

“This is another country and people are coming here to see the New York Public Library,” Rauth marveled.