The BOS female laid her head back on the pillow as the male stroked. The moonlight flooded in through the high windows of her quarters, dimly illuminating the bed. Their light skin appeared blueish in the moonlight. The male's arms straddled her torso as he pushed his lower body between her legs. Her arms extended down to her sides, her palms facing down on the sheets. She closed her eyes for a moment, drawing in a breath as he stroked again.
The air stopped flowing in, and her eyes shot open. She felt a great pressure around her neck and throat as the synth clamped down on her with his hands, his arms fully extended. She tried to breath in, but couldn't. She grabbed his arms to try to pull his hands away, but she was unable to. She automatically assumed the guard, locking around him with her legs, doing as best she could with his penis still in her vagina.
She remained calm, drawing her legs up closer to her body, and arching her feet up onto her toes. She attempted to bridge, hoping she could set off his balance and at least shift his weight off of her. The male, who she now figured was a synth, was relatively light and tightly built, but he was very sturdy. Her attempts to thrust him off of her were ineffective. She only felt his penis move inside of her a bit as she jolted. The male's grip remained constant. She was beginning to run out of oxygen quickly due to her efforts.
She attempted twisting her body to try to slide out under him, but his lower body kept her pinned down. His penis remained inserted in her vagina, further keeping her from sliding down. Additionally, she'd have no way to get her legs inbetween his. She was out of options, and needed air.
She tried prying at his arms again, but it was no use. She began kicking and contorting, panicking as she tried to break free. His penis moved around in her some more as she jolted. The last of her oxygen depleted quickly, and her strength began to fade. Her kicking developed into weak leg movements across the sheets, finally extending her legs all the way, tensing up. Her arms and grip grew weak, and eventually they fell to her side.
The synth began stroking again as her movement faded, maintaining his grip on her neck. She made only an occasional choked noise as his grip grew even tighter. The synth began to speed up a bit as the last of her movement began to cease. Her eyes began to flutter, and a few muscles began to twitch as she orgasmed. The synth orgasmed at a similar time, and the female's movements ceased completely, going entirely still.
That made the first on the BOS with this method. The group had been practicing on smaller factions and settlements for a while, but this was their first on a large group. The BOS female, a Scribe, would be replaced with a synth clone, and her body teleported elsewhere to be disposed of. No one was likely to notice if anything was a bit off, not that it would be.