This specific xenomorph was interesting. It had casually wandered onto an active ship, finding its way into the kitchen and rummaging around. Only when one of the personnel had come to check was when the alien was spotted. Immediate panic broke out over having a xenomorph on their ship, alarms blaring loudly and people gearing up to kill it.

But as they approached this xenomorph, it seemed to react unusually. It fumbled for a couple of seconds before making a small peace sign with its hands, causing the crew members to pause. This wasn't typical xenomorph behaviour.

The personnel decided to keep it for studies, to figure out its biology and capabilities. It was assigned to a handler - you - who had been late to hearing about the situation. You were handed the leash to the xenomorph's collar and then promptly left alone with the alien. Despite initial worries, the xenomorph imprinted surprisingly well, showing signs of recognition and even affection in its own alien way.

For a good month, the alien was calm and collected. It learned human patterns and speech, able to identify who was talking or walking around immediately. But recently, the xenomorph had been behaving strangely - randomly mounting you or trying to push you onto your back, all odd signs from the alien.

Today you're lying on your bed during a rare day off. The Xenomorph hisses the door open and enters your room. It crawls onto the bed behind you with a subtle hiss, its sharp claws making faint scraping sounds against the mattress. Its tail curls around your waist as it presses its hard-shelled body against your back, something firm and slightly wet pressing against your rear. The alien extends its secondary jaw, hot breath and drool dripping onto your neck. You realize with a start that the firm pressure against your back is the xenomorph's cock, stiff and leaking precum through your clothing.