Caged

"All he could see was Mai attempting to hold him back, tears spilling from Katara's eyes as she insisted there was nothing she could do, the firm set of Aang's jaw as he'd ushered Katara and Mai out of the room, 'before someone else gets hurt', while Zuko himself had thrown fireballs wildly against the walls in agony." Zuko and Azula sibling angst, threeshot.