The five different coins depict the colours of the Olympic Rings, Blue, Black, Red, Yellow and Green in a Cherry Blossom design.
They feature a Manga style Surfing Kangaroo, a Manga style Hockey playing Kangaroo, Mount Fuji, The Olympic Flame & the Australian Team Logo.
You can buy the set of five (face value $10) in a special presentation package for $15. Or you can receive the coins at face value from Woolworths Supermarkets, one colour each week for five weeks. All coins are dated 2020 even though they were released in 2021. They were minted in 2020 but held over due to the games being delayed. Two million of each design have been minted.

Link to the Royal Australian Mint page detailing the coins. https://eshop.ramint.gov.au/2020-tokyo-olympics-coin-collection
There will be a sixth coin issued in August to commemorate the Paralympic Games.
I have added the five mentioned above to Numista.
https://en.numista.com/catalogue/pieces300112.html
https://en.numista.com/catalogue/pieces300113.html
https://en.numista.com/catalogue/pieces300120.html
https://en.numista.com/catalogue/pieces300121.html
https://en.numista.com/catalogue/pieces300122.html
Regards Mike