I have seen in some anime where the character become nervous, sweats profusely and makes this action. For ex - Tadokoro Megumin from Food Wars: I have also seen Minoru Mineta from BNHA doing that. What does this action signify? Is there any cultural significance to it?

It went something like this boy died, and then he got put before a holy being/ god and he died on a boat with some people, most people got lucky and got reincarnated into a good life and he was really unlucky, so he was reincarnated into a really bad life, and I remember he was a little elf boy ...

With what happened at the second season fairy tail disbanded and Natsu went on adventure to train. In that time Gray got his ice devil slaying magic which we also see in the movie. Then when Natsu gets back form his training he gets everyone together and the master as well. once that happens prep...