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Reita would be lying if he said he didn’t know how he got himself in this situation - he knew exactly how it happened and wished he hadn’t taken the bait.
It was no surprise that his boyfriend, Kai, proposed they “try something new” in the bedroom. He had always been the more adventurous of the two, always wanting to spice things up and Reita was more than happy to oblige - his boyfriend had never let him down before or broken his trust so why should he worry?
Things started off like normal… mostly. The “something new” Kai wanted to try was a mirror. He brought a full length body mirror into the bedroom and set it up across from the bed so the two could see themselves and everything that would happen.
“It’ll be fun!” He said.
It was, at first.
Kai had them on the bed, facing the mirror so Reita could see himself and everything Kai was doing to him. Both were on their knees with their shirts removed so far. He could see where his hands were travelling down his body, see where his lips were pressing against his tanned skin. It was one thing to feel it all happening but it was another to be able to see it. Reita could see the way his body reacted, the goosebumps appearing on his skin, the rise and fall of his chest, even the slight tremble in his thighs as Kai’s wandering hands got closer to what Reita desperately wanted.
Just as he thought he was going to feel some kind of relief, Kai moved his hands away to his own belt. Reita could feel the cold metal of the buckle as it came undone and heard the belt being removed from Kai’s pants. The blonde didn't have time to worry about what to do with his hands as they were being pulled behind him and bound with his boyfriend's belt.
“Don’t squirm too much.”
Warm breath tickled his neck as the belt was done up tighter than usual. Reita chose not to question it - he trusted Kai.
His own breathing picked up in anticipation at what would happen next. In the mirror, Reita could see his blush making its way from down his cheeks, to his neck and slowly reddening his chest. In the reflection of the mirror Reita could see Kai moving behind him, searching for something. The brunette looked up and locked eyes with him through the mirror, “Eyes on yourself.”
Reita shivered and did as he was told, training his eyes back on his own reflection and waiting for what his boyfriend was going to do next.
He didn't have to wait long when Kai straightened up and pressed his chest against Reita’s back. The blonde started to moan when it turned into gasp as he felt something cold and sharp pressing against his lower abdomen. He started to look down at what was going on but was stopped when a calloused hand gripped his jaw and forced him to look back at the mirror.
“Kai - Wha-?”
The drummer growled as Reita began to talk, “I told you to keep your eyes on yourself.” The sharpness continued to press more and was almost on the verge of causing pain. Not having much choice, Reita looked at his reflection and saw Kai holding a knife. His heart rate sped up again but out of fear this time.
This was not what they had agreed upon.
Sure, Kai had sprung things on him in the past but it was usually things they had talked about beforehand, this was something that had never come up. The topic of knives was something that had never even been entertained in their sex life and Reita had thought they were on the same page since the brunette had never brought it up.
Reita wanted to struggle and get away but he couldn't. Behind him was his boyfriend, the person he trusted more than anyone else in the world and loved more than anything. In front of him was a weapon, if he pressed forward more it would surely break the skin. Not to mention, his arms were still bound behind him with Kai’s belt.
The bassist was no longer hard, the reality of what was happening sinking in but behind him Kai was still hard, he could feel his length pressing against him through the fabric of both their pants. The grip on his jaw was becoming painful as he was being forced to stay in this position and his wrists were stinging from the chafing caused by the leather belt.
Just as Reita opened his mouth to protest again he felt the pain of being cut open. It was just a small laceration at first, no more than a couple of millimeters deep and about an inch wide. Whatever the blonde was going to say had been turned into a gasp and he backed up into Kai more, hearing him groan into his ear. Looking in the mirror he locked eyes with his boyfriend and silently pleaded for this to stop but he was met with a sadistic smile instead.
Before he could make up his mind about what to do he was being cut again - this time the wound was a lot deeper and wider, almost like Kai was gaining confidence in what he was doing and going in with more conviction, more sure of his intentions. Being worse than the first one had been made Reita feel the rush adrenaline that came from skin being broken and then the numbing ache that soon followed.
But Kai didn't let that feeling last for long. He continued making cuts along the bassist's abdomen, many becoming deeper and wider than the one before it and all the while he was still holding his boyfriend’s jaw in place so he couldn’t take his eyes from the scene.
Reita wanted to look away, shut his eyes and pretend this wasn’t his beloved doing this to him but he couldn't. His breathing was ragged and tears had begun falling from his eyes, small sobs coming from his mouth mixed with pleas and begging for the brunette to stop.
The cuts climbed higher now, reaching the blonde’s chest before they suddenly stopped. He didn't even notice at first, too focused on begging for this to end. The hand on his jaw slacked and moved to cradle his face instead, a gentle touch compared to what was going on - this startled Reita and caused him to open his eyes that he didn’t even remember closing.
Kai gently pushed his head to lay back on his shoulder, the blonde being so worn out didn’t fight back and put his entire weight on the drummer as well as leaning his head where it was being directed. Their eyes met again and he was given a gentle smile but those eyes weren’t the same ones he looked into day after day - they no longer held that same warmth that Kai was usually known for. They were distant, almost.
Reita thought it was over until one of the drummer's hands moved to grip his hip, the other ghosting over his lover’s body, gathering blood and tracing cuts. Every touch caused small jolts of pain to go through his body. Whimpers were coming from his lips again, Kai made small shushing sounds as if to comfort him and for a moment, the blonde thought that perhaps he was imagining it all and his boyfriend was back to his usual self until the hand gripping his hip moved to the front of his pants and began palming his soft cock through them.
He wasn’t sure how to react at all, one hand giving him pleasure and the other reminding him of the pain he had just endured. Reita didn’t have to worry much about his own reaction however, his body deciding for him as his cock started hardening under Kai’s touch.
When the brunette could feel him getting hard he then started pressing harder on the wounds he had inflicted - slowly beginning to dig his fingers into them. Reita yelled in pain this time, started squirming to get away but Kai used both his hands to press the blonde into him more.
At this point the bassist’s head was swimming with so many thoughts and emotions, bouncing back and forth between pleasure and pain. His body was reacting to the different sensations and he couldn’t be sure if he was grinding against Kai’s hand to get off or if he was trying to move to get himself away. All the while he was back to begging but now he wasn’t sure if he was begging for him to stop or if he was begging for more.