Sunweavers by Carolyn Golledge

Sunweavers: The Brothers

Able to photosynthesize light and use it in battle as lasers, Sunweavers are captured by invaders who not only want their secrets but also to reharvest their bodies. When his Sunweaver Brother’s soul is apparently destroyed, Taran m’Connor rescues the living body then returns to enemy lands intent on uncovering the truth. A vision of the future tells him where to begin.