Japan's largest-ever Paralympic delegation was launched Tuesday, just a week to go until the opening of the games in Tokyo, with athletes and officials gearing up for their best performances.

Wheelchair tennis player Shingo Kunieda, the delegation's captain, pledged to put "utmost efforts into competition with courage and determination" during a ceremony, which was attended by many of the record number of 255 athletes online due to the coronavirus pandemic.

Wheelchair tennis player Shingo Kunieda (C) speaks at a ceremony to launch Japan's Paralympic delegation on Aug. 17, 2021 in Tokyo. (Kyodo)

The 464-member team is targeting a record 20 gold medals at the Tokyo Paralympics, hoping to continue the success and excitement created by the country's Olympians, who won a record 27 golds at the recently closed sporting event.

"At the Tokyo Olympics, we were able to see Japanese athletes challenging with all of their strength and doing their best, and I felt shivers on many occasions," said Kunieda, a two-time Paralympic men's singles champion.

"I hope many children in Japan, regardless of having disabilities or not, can feel the infinite possibilities of humankind by watching para sports," he said.

The Paralympics will open on Aug. 24 following a one-year postponement but without spectators at all venues, excluding some students, because of a rapid increase in COVID-19 cases in Tokyo and other parts of the country.

Japanese athletes from those in their teens to their 60s will compete in all 22 sports, including badminton and taekwondo that will make their Paralympic debuts, until the games close on Sept. 5.

During the ceremony at a Tokyo hotel, a limited number of athletes and officials, including Chef de Mission Junichi Kawai, sat apart from each other as a precaution against the virus.

Japan's two flagbearers, men's table tennis player Koyo Iwabuchi and women's triathlete Mami Tani, received the delegation flag.

Kawai, a former swimmer with visual impairment, said the athletes participating at the Paralympics have trained hard while facing difficulties posed by the pandemic.

"Now the stage has been prepared where you can all demonstrate your possibilities," he said.

Photo taken on Aug. 17, 2021, shows the athletes' village for the Tokyo Paralympics in the capital's Harumi waterfront district, which formally opened the same day ahead of the Aug. 24 opening ceremony of the games. (Kyodo) ==Kyodo

In a video message, Japanese Prime Minister Yoshihide Suga expressed support for them, saying, "All of the athletes challenging their limits and overcoming barriers will move people around the world and encourage them."

At the Rio de Janeiro Paralympics five years ago, Japan finished without a single gold, claiming 10 silver and 14 bronze. The country earned its record of 17 gold medals at the 1988 Seoul Games and 2004 Athens Games.

The Tokyo Paralympics will feature up to about 4,400 athletes from around the world.

The Japanese capital has been under a COVID-19 state of emergency since July 12. However, it has seen a steep rise in infections, with the figure nearly tripling from before the start of the Olympics on July 23.

The International Paralympic Committee and three Japanese organizing bodies made the unprecedented decision on Monday evening to ban spectators at all venues.

As an exception, students of local schools taking part in a government-backed educational program will be permitted to watch competitions in person.