It is part of a larger corruption scandal in the country related to the Games, stemming from allegations made against Tokyo 2020 member Haruyuki Takahashi, who is also accused of orchestrating bid rigging over test events prior to the Olympics while overseeing the marketing division.

The 84-year-old "used the Tokyo Olympics for self-interest and trampled the public value of the tournament" said prosecutors in a trial at the Tokyo District Court, according to Kyodo News.

Former vice-chairman and Aoki's brother, Takahisa Aoki, and former executive director Katsuhisa Ueda, are accused of giving bribes to Takahashi between September 2019 and March 2022.

Aoki Holdings looked to receive preferential rights over providing official outfits for the Japanese team, according to the courts, and this request was granted at the order of Takahashi.

Takahashi was a former senior managing director of the largest Japanese advertising agency, Dentsu, which is also connected to the ongoing corruption investigations.

Prosecutors called Aoki's "hefty bribe-giving over a long period" was an "extremely malicious act".

It added the chair was "greedy and tenacious" for trying to monopolise sponsorship opportunities through the Tokyo 2020 member.

All three charged met with former Prime Minister Yoshirō Mori, who was then Tokyo 2020 President before later being removed due to sexist comments made.

Prosecutors are seeking an 18-month sentence for Takahisa Aoki and one year for Ueda, stating Hironori Aoki bore the "heaviest responsibility".

The defence have requested suspended sentences for all three, who admitted charges in their first hearing in December, claiming they did not earn personal benefit.

Hironori Aoki, who founded the company, apologised in his closing statement. 

A ruling will be handed down on April 21.