"You're all just power-hungry bastards," Ezreal growls around his cock, though Darius can only mostly make out the vowels. There are hands calloused from countless excavations massaging at his thighs. Ezreal lifts his head up and licks his lips as he gives Darius a challenging stare. Even naked on his knees, the bruises half-formed across his torso, he is petulant. "You're ruthless and violent and you lie and cheat your way into power."
Darius grunts, and it might be mistaken for a humored sound. "Whatever gets you off, kid," he says, before Ezreal's mouth is back around his erection. The boy doesn't argue back (or maybe he does, but honestly Darius isn't paying much attention at this point) and for a while the air is filled with the sounds of suckling and heavy breathing. Darius bucks, and Ezreal chokes and gags a little bit, but the hand in his hair keeps him from moving back.
Instead there's a displeased growl and a bit of warning pressure from vengeful teeth before he begins his motions again, and Darius remains still this time. They're away from the Nexus now - if Ezreal bites, he knows he's probably dead. Darius would rather like to avoid that particular injury however (and the inquiry that would almost certainly follow it - "what were you doing with the Piltover boy's mouth on your cock anyway?"), so he restrains himself. There's a difference between cowardice and tact, and this is a situation easily avoidable.
He's rewarded with Ezreal's skilled tongue running up and down his shaft, head bobbing to accommodate the motion. Darius tightens his grip on Ezreal's hair. The boy doesn't seem to mind, and Darius takes in a deep breath and his thighs tighten under Ezreal's kneading palms. That's all the warning Darius gives before he rolls his hips forward (slower this time, a compromise) and cums into Ezreal's mouth.
For how surprised the boy looks, he certainly manages to react quickly enough. Ezreal squirms a bit, digs his nails into Darius's thighs but he can't pull back against the hand grabbing his head. He swallows, and only a few drops leak out from the corner of his mouth and drip to the floor.
Darius finally lets go after the last waves of his orgasm recede. Ezreal stands up, disdain written across his face as he wipes his mouth with the back of his hand.
"All you Noxians are disgusting," he says, ignoring his own erection as he strides towards the shower. Darius stares after him, considers washing at least the blood and sweat from his hair, but then decides against it and just starts redressing. His transport back to Noxus will certainly be waiting, and he snorts in amusement as he pulls from between his fingers a strand of bright yellow hair.