Kemono Jihen Vol. 6 (manga)

Although it granted him great powers, Yui's life force is being drained by the stone that he brought away from their snowy mountain home. When Akira reaches out to take it to save him, he sees a glimpse of Yui's memories of the sad fate he accepted to protect his younger brother. What will happen to these brothers, and what will the friends learn about the mystery of the kemono stones?