This program, as far as I can tell, is called "Bug Game". No idea if that's actually what it's called, but let's go with it.
There are various obstacles the contestants have to contend with, but what is most important is that they do it dressed as brightly coloured bugs. I'm not sure if there is a reason for this, but it kinda makes it cooler not knowing, I think.
As with most Japanese game shows, the piece de resistance all is the bizarre punishments meted out to them if they fail; in this first one, a woman appears to blow full-strength garlic breath at them.