Tokyo 2020 chief executive Toshirō Mutō has said organisers are now more committed than ever to deliver the best possible Olympic and Paralympic Games in four years’ time ©Getty Images

Tokyo 2020 chief executive Toshirō Mutō has claimed Japanese organisers are now more committed than ever to deliver the best possible Olympic and Paralympic Games in four years’ time after spending time here in Rio for the 2016 edition.

Mutō was speaking at a press conference , where he was joined by Yuriko Koike, Governor of the Tokyo Metropolitan Government, and Mitsunori Torihara, President of the Japanese Paralympic Committee (JPC).

The 73-year-old said the vision for the Games, which he billed as the most innovative in history, has three constants - "achieving personal best", "unity in diversity", and "connecting to tomorrow".

"We have been impressed by our experience across both the Olympic and Paralympic Games and inspired by the passion of the Carioca, so that we are more motivated than ever to deliver the best possible Games in four years' time," said Mutō. 

"We have been wowed by the huge crowd in the Paralympic Park and we can imagine how much work has been done by the Organising Committee.

"We will look to build on the wonderful legacy of Rio 2016."

Yuriko Koike, Governor of the Tokyo Metropolitan Government and President of the Japanese Weightlifting Federation, has warned the budget for Tokyo 2020 will be subject to further review ©Getty Images
Yuriko Koike, Governor of the Tokyo Metropolitan Government and President of the Japanese Weightlifting Federation, has warned the budget for Tokyo 2020 will be subject to further review ©Getty Images

Koike, the first female to take up the Governor's position when she claimed victory in election in July, has made reducing ballooning costs a priority.

She had claimed before the election that the budget had risen to an estimated ¥310 billion (£2.2 billion/$3 billion/€2.6 billion), around six times the original budgeted cost.

Koike has vowed to review the existing plans for Tokyo 2020, with a mid-term report expected to be given to the City’s Assembly on September 28.

"In the Olympic and Paralympic Games it seems there are budget overruns occurring everywhere," said Koike, the Japanese Weightlifting Federation President, who will receive the Paralympic flag from Rio Mayor Eduardo Paes at the Rio 2016 Closing Ceremony tomorrow.

"It is important to review the budget at this time so that the fiscal state of the Games can be sound.

"The Games budget will be subject to further review.

"In anything we would like to earmark budget for training for athletes, to focus on athlete-first thinking."

Asked about the importance of accessibility, Koike added: "Barrier-free facilities are, by all means, important, but I believe that a barrier-free mind is equally as vital.

"I visited the Athletes' Village and some of the stadiums [in Rio] yesterday and what I learnt about barrier-free facilities is that volunteer support for people with disabilities will be very useful for Tokyo."