In 150+ attempts since 1984, Japan has won 2 world-level men's freestyle medals above 74kg.
In fact, from roughly 650 medals above 74kg since 1984, only 6 men have won medals from documented smaller stature Asian wrestling nations (meaning Japan, India, N/S Korea, China, Mongolia).
With half of weights above 74kg, Japan's men will never come close to team gold again unless they can duplicate their perfect performance in a 6-weight olympic year like this year.