In Amaterasu, how do Susanowo's actions affect the advancement of the plot?

In Amaterasu, Susanowo's actions (the part where he annoyed his sister Amaterasu because she did not appreciate him) affected the advancement of the plot by making his sister hide into a rock and not wanting to have any interaction with Susanowo again. This led to darkness falling over the entire world, and Susanowo getting sad on his way to the underworld.