I don't get the exam. Can someone please explain it to me? :(

From my understanding each of the chosen one has to touch a jewel that symbolises a sacred beast (probs their own partner’s). This test starts when one sacred beast starts going a bit crazy and I think all of them will end up start acting up. Their time limit is till the sacred beast becomes fully out of control. At least that’s what I think.. ╮(￣▽￣)╭

Only Nagi acts up don't worry about the others

Only chosen ones vs one sacred beast, just to prove their deep love connections.