We will have a more formal debate at the end of July. Below are some resources that I have found that may be useful for you.
Tokyo 2020 Olympics
3 Reasons Why Hosting the Olympics is a Loser's Game
Just Say No
Are the Olympic Games a Waste of Money?
Here Are Five Good Reasons Not to Host the Olympics
Why We Should Host the Olympics in the Same Place Every Time
Negative Impact of the 1964 Olympics Profound
9 Ways Tokyo Could Become More Foreigner-Friendly...
No Chance of 2020 Olympics Restarting Japan's Economy
Are the 2020 Tokyo Olympics in Trouble?
8 Reasons Why the Tokyo Olympics Will be the Most Futuristic...
The 2020 Olympics Will Make All Japanese a Little Healthier
Japan Might Change All Road Signs for the Tokyo Olympics
Despite New Design, Controversy May Dog Tokyo's Olympic Stadium
Areas Around Tokyo Olympic Venues to be Made More Accessible...
2020 Olympics Could be Great for Tokyo
Time has Come for an Honorable Retreat from the Tokyo Olympics