He was breathing hard, on the edge of a panic. Through the earth, she could get a closer read on his heartbeat, and she realized it wasn't a bad panic. Far from it. In fact, he seemed to be extremely into what she was doing.
Even though he was straining against the metal cables that bound him to the wall, trying to thrust into her hand, which had gone still on his erection. "Really, Zuko?"
"J-just please, keep going, please…"
"When I feel like it." She closed her other fist, giving her cables a tug that jerked on his body from both ends.
He let out a shaky breath, flexing his fingers and gripping the smooth steel links that bound his hands together.
"You know, I've never used these naked before," Toph mused, still kneeling down between his legs. Her reels, one on each hip, whirred a little as she let more cord out of them, so that the gentle-but-firm tension on Zuko's hands and feet would stay the same as she moved. "The belt is pretty comfy once it warms up to my skin."
He was never any good at talking dirty. Once he was hard, language completely deserted him. "T-Toph…please…"
"It was your idea to be blindfolded," she reminded him. "And you said you'd be fine with doing whatever I wanted."
"Please…"
"What's the matter?" Rising, she brushed the back of her hand against the burned side of his face, intimately conscious of the way his entire body was quivering, trapped between her and the wall. Once she'd tied him up, the only times she'd touched him had been for pleasure, not pain; and yet he still twitched when her skin brushed against his. "You didn't expect me to do something like this?"
"Toph…" His voice was very small, faint.
"You can end this," she pointed out. "That's why we chose a safeword."
He fell stubbornly silent.
She shrugged. "If that's the way you want it." She took her time kissing the side of his neck, ligaments tensing beneath her lips, before she knelt down again. He was so sensitive that long, lazy licks and rubs on the least sensitive areas of his shaft sent him into a paroxysm of pleasure, writhing helplessly and crying out.
It was impossible for her not to smile against his overheated skin. She let him finish this time.
