Ame

Ame is the youngest wolf child. He is shy and quite weak. He looks awfully lot like his father. He is a year younger than his older sister, Yuki

Later in the movie you would notice, Ame wants to be a wild wolf instead of a normal human like Yuki. Ame later goes onto living in the mountains to pursue his dream of living as a wild lone wolf. He would sometimes call out to his mother in the wind of the mountains.