Epoca: The Tree of Ecrof

Epoca: The Tree of Ecrof (2019) by Kobe Bryant and Ivy Claire is a middle-grade fantasy novel, the first in the Epoca series. Ten-year-old Pretia, a crown princess, and Rovi, an orphan from the streets, are among the students chosen for an elite academy where young athletes train in sports and learn to control grana, a magical power linked to emotion. Each hides a secret, and as they train, they discover that the trees of their kingdom are dying and a dark threat is growing.