Lawl just finished that random 8018 thing and suddenly I write more D18. With the darker version of Dino. Wut.
Though he would never admit it to anyone but himself, Dino knew that he got a sick satisfaction out of seeing Hibari fail. The thing he loved most about the skylark's ridiculous strength and confidence was that he could take that confidence in his hand, nurture it, and then crush it all at once. Because Dino was stronger, and they both knew it. Hibari hated it, or at least he hated when Dino flaunted it, and when the flaunting went on too long he would be put in an absolutely terrible mood—if Dino's good mood persisted, it only pissed him off more, until he was actually pissed off, instead of just putting on his usual carnivore show.
Something about Hibari being truly pissed off almost amused Dino. Maybe it was because the cause of his unhappiness was his own supposed weakness, and anything resembling weakness in Hibari was as close to 'cute' as he ever really got. When he got really angry, to the point that he wasn't just pissed but seething, it was almost always out of pure frustration. Hibari was used to getting his way, just by showing a bit of force. After all, no one denied Hibari Kyouya something he wanted when he was brandishing one of his tonfa. And yet, time and time again, Dino would do just that. Hibari would very seriously tell him to stop doing something, and he wouldn't feel like stopping, so he'd say no and just keep doing it. Hibari would attempt to hit him with his tonfa, and he'd stop the blow, catching the boy's hand and forcing a halt to the attack. And if he felt like it, Dino would continue to exert his superior strength and pin the skylark down, and from there things always went his way.
He loved Hibari, he really did—no matter how the boy fought against this fact—but he also loved to see Hibari broken, hopelessly succumbing to his learned hands, and he loved to see him so frustrated that if he were anyone else he would be in tears, so angry he could hardly stand being angry anymore. He loved the flush of heat, accompanied by the perfect pout (Hibari would never call it that, but it was definitely a pout), that adorned Hibari's features when he had been overpowered—and oftentimes tied up—during one of their more secretive moments.
Hibari had always been a boy prone to deny everything others might see as good. It was almost impossible to ever get a positive answer from him, it was always no after no after no. So Dino had to take matters into his own hands, and he did so cheerfully, and with reckless abandon. There was nothing about Hibari he loved more than to break him.