“Either until I lose focus,” he says, “Or until your shield absorbs too much force to maintain integrity. Which should take a while, unless they somehow find something that hits harder than a rock.”

The main problems are that first, Rezo needs to keep at least part of his attention on maintaining the shields, so instead of firing back or gathering leaves he’s hanging onto his branch with his brow furrowed in concentration; the second issue is that said shields aren’t that big so while their heads are being guarded, the monkeys can aim for the limbs.

For example, a rock the size of a child’s fist has just smacked into Rezo’s thigh. Ow.