son - was a good and loyal son. he didn't leave his mother in the mountain to die
mother - was selfish to herself. was good to his son also.
r it could be just saw it on google hihi : )
the aged mother- main character of the story, who has the wisdom that brings to save and benefited their land.
the young farmer- son of the aged mother. the daimio- the despotic ruler of shirano but later on he learned to give importance to the old folks.
hope my answer helped you..a little bit hehe : ))