This question refers to the japanese myth "out of the cave and into the light." susano-o liked to cause disturbances, and this caused his sister, amaterasu, to run away and hide in a cave.

That statement is true.
Accodrding to the legende, Susano-o once destroyed all the rice fields/irrigation and defiled one of Amaterasu's temple.
Because of Susano-o's action, Amaterasu became really afraid and decided to ran away, hide herself in a cave, and block the only entrance with a massive rock in order to prevent anyone from finding her.

The best sociological research method would have to be using experiments although it has some disadvantages as well