There was always a certain element of unease that left Grimmjow on edge whenever Szayel Aporro crawled into his bed at night, particularly when he had his pretty lips stretched around Grimmjow's thick cock. The octava Espada could do fucking wonders with that mouth of his, leave Grimmjow dazed with his tongue. There had been multiple times where Grimmjow had fucked that pretty mouth and nearly made the scientist choke as he reached completion; something the pinkette allowed only because he got off on it.
Allowed. Szayel Aporro called the shots, even if it was Grimmjow ramming his cock up the scientist's tight ass. The only reason Szayel Aporro was able to call the shots, despite being two ranks under him, was because of only one thing. Teeth. There were times few and far in between that Grimmjow was able to leave Szayel Aporro's company without deep grooves in his flesh from the cannibal's incisors. Sometimes he took a little more than just a bite and Grimmjow was left with a gaping wound, cursing and yelling while the sadist peered down at him from behind his glasses curiously, blood dripping from the flesh between his pearly whites.
It was those morbid images that kept Grimmjow on guard as the octava's head bobbed in his lap. He could deal with chunks of flesh being ripped from his arms, shoulders, sides, and thighs. But if he ever found himself without a dick, well, he'd find a way to kill the gorgeous immortal who was currently working to get him off.
"Fuck." Grimmjow growled as he fisted the other man's hair, hips bucking slightly into his mouth. The sexta received a moan of approval in return and that was all he needed to tighten his fingers in the pink locks and thrust his hips up, relishing in the surprised and choked groan the octava made. He continued to hold Szayel Aporro's head in place as he violently fuck his mouth, loud obscenities falling from his lips as he forced his dick into Szayel Aporro's throat.
It only took another minute for the blue haired Arrancar to go over the edge and hold Szayel Aporro's head in place tightly as he came with a feral growl, forcing the octava to swallow his load. Grimmjow's fingers smoothed the pink strands he had pulled out of place as the other man removed himself, panting and coughing from the abuse his mouth was put through. The scientist's pretty lips were swollen, rouged, and slicked with saliva and traces of Grimmjow's seed. Without giving it a spare thought Grimmjow grabbed the man by the front of his shirt and pulled him forward, crushing their lips together and was rewarded with another groan from the lower Espada.
Szayel Aporro pulled away moments later with blood dripping on his pretty lips and left the bedroom, leaving Grimmjow to nurse the deep grooves left on the exposed side of his jaw.