Chapter 1 - First time

When Shepard served the alliance, he’d never considered Cerberus nothing more then a terrorist organization. They’d staged attacks and gone after the alien races every chance that they got. But they had been the ones to resurrect him and give him a chance to fight against the collectors that were going after the human colonies. They’d also allowed him to gather his own crew which he appreciated. But there was one thing that he truly loved about his new connection with Cerberus and that was the special gift left in his cabin when he arrived on day.
Walking through the sliding door to his private cabin he saw a small package on his bed. It was signed by the illusive man and inside was a small purple vial, a note and a black metal collar that had a loop for a chain. Picking them up he read the note.

“Shepard, I know that your job can get stressful so insert this vial into the slot near your fish tank and choose a room. The vial contains a mix of your DNA as well as a powerful mind-altering serum. Once it hits the air it will completely compel whoever it meets to be completely obedient and submissive to you. Think of it as a gift to help you relax.”
After rereading this twice he quickly hid the serum away vowing to never use it. But after weeks of missions and gathering more female crew members then male he was starting to rethink the serum. After all he was only human and fighting against a foe that could wipe out full colonies in a day was extremely stressful.
Grabbing the serum, he inserted it into the wall and watched as the wall divided into a small series of screens displaying his crew. He thought about which one he would choose, he had to be a careful about which he chose for he only had one shot.

For a long time, he kept switching between Miranda and Jack. Miranda for she was a bitch but one with perfect assets, something she’d used to taunt him with in their conversations. Jack because the thought of the convict bowing down before him instantly got him hard. But finally, he decided on Samara. She had the assets he liked in a woman as well as the firm demeanor that peaked his interest. He’d always had a thing for asari and Samara was one who always walked around with a revealing amount of cleavage. Pushing the button, the vial quickly drained of its contests. Seconds later on-screen Samara stopped meditating for a second and looked around as a faint purple gas filled the room before quickly dissipating. After a few more seconds of looking she simply returned to mediating while back in the cabin a on screen holo of Samara appeared stating she was under his control. Deciding to check it he pushed the screens back into the wall.

“EDI do me a favor a call Samara up to my cabin.”

“Of course, Shepard.”
Nearly five minutes later he heard a knock outside his door.
“Shepard it’s Samara, you wanted to see me.”
“Yes, come on in.”

As soon as the door opened, she walked in.
“Is there something I can do for you Shepard?” she asked in her usual neutral tone. 
Taking a deep breath, he prepared himself to get warped if this went bad. “Yes, you see you’ve been neglecting your duties.”
“I have?”

He stepped closer and grabbed her breast firmly squeezing it. She let out a surprised moan but made no effort to escape which gave him the confidence to keep going. “Yes, you see I wanted you as my crew not to just be a justiciar but to be my personal whore. No be a good bitch and strip for your master.”
He let go of her breast and couldn’t stop smiling as she quickly pulled of her red suit letting Shepard see that she didn’t wear panties. As soon as she was naked, she dropped to her knees.
“Master please forgive me for my negligence. Please allow me to serve you properly from now on.” He walked over to the bed and stripped before sitting down. “Crawl to me.” 
Normally he’d be sickened by his actions as he was known to be pretty good natured but watching as the proud justicar slowly and sexily crawled down the stairs and along the floor quickly got the blood flowing. Once she reached his she took his cock in her hands and rubbed her face and lips on it letting the stench mark her. After thoroughly making sure that his cock had gotten to every part of her face.  Then she began licking his cock up and down getting it harder and harder, but just as she was about to suck it, he pulled her head back.

Her reaction was just what he wanted. “Master please let me suck it! I want you cock to ravage my mouth and throat!”
“In a moment, EDI I want you to record this all right.”
“Of course, Shepard I have been recording this since the moment Samara arrived.”
“Good.”

The second he let go she dove onto his cock running her tongue all over it tasting every inch before taking it into her mouth. Once his cock was inside, she began rapidly sucking it. But she didn’t just stop with his cock she also payed close attention to his balls, as her mouth was busy her hands gently fondled them which for a pent-up Shepard quickly got him close.
“Alright pull back and open your mouth.”

She pulled back on her knees and opened her mouth letting her tongue hang out like a bitch. After a couple jerks his two years of stored cum shot out like a rocket, the first shot got her left eye and dripped down to her breast the other two hit her forehead while the last one shot directly into her mouth and onto her tongue.

For a moment he could just stand there his cock still hard as he looked down at the naked cum coated asari. Her one non-coated eye was twitching with pleasure while her hands were quickly went to her face wiping up the cum before happily lapping it off her fingers. Once she was clean, he walked over to the box and pulled out the black collar before putting it around her neck. As soon as it was on the word’s DNA lock appeared in red letters followed by the option for naming.
“So, I’m the only one who can take this off you huh?” After a moment he typed in the name she would go by from now on.
“From now on whenever we’re alone you’ll only answer to Justiwhore. Is that understood!?”
“Yes, master I’m your personal justiwhore.” The collar lit up and in front the word justiwhore appeared in big red letters.
Picking her up by her collar he threw her onto the bed’s edge. “Spread those cheeks of yours.”
Obediently she did as she was told and spread her blue cheeks showing her master her dripping pussy.
He reached down and firmly gripped her firm blue ass making her shudder.

“Well you sure are sensitive.”
“I haven’t done anything sexual in centuries master.”

Hearing this got him even harder, he pulled his hand back before bringing it down hard on her ass making her squeal in surprise. Her ass under the multitude of strikes he gave her quickly turned her blue ass purple, but she still held her cheeks apart. As he ended his barrage, he noticed her pussy had complete drenched her legs and the blanket beneath her.
With one hand he gripped her ass while the other quickly lined his cock her pussy before quickly shooting inside. The effect was instant as her body locked up and her voice became shrill.
Shepard found this to be adorable

. “Awww did my justiwhore cum just from me putting it inside her pussy?”
As her first orgasm in centuries started to fade she barely managed to nod.
Shepard didn’t hesitate as he forcibly began fucking her as hard as he could. His thrusts were so forceful and her body so sensitive that she came three times in just the first few minutes. It go so bad the her hands gave out forcing her upper body into the bed and her ass into the air.

He thought he could hold out longer, but the tightness of her unused pussy was more the Shepard could bare and after a quick burst of speed he rammed his cock into her pussy before cumming. Every second he came felt like heaven as his seed shot deep inside of her. The feeling of her masters cum flowing into her was so good she completely collapsed, But Shepard wasn’t done with her yet. Grapping her legs he flipped her on her back and slid his cock into her ass. As he expected her ass was much tighter then her pussy and the view he got as he fucked her ass was only enhancing the experience. With every thrust her massive blue tits bounced up and down while her face distorted into a mask of pleasure. Her voice quickly went from shrill screams to indistinguishable moans as her body completely gave in to the pleasure and pain. As the minutes droned on and Samara started to finally come down from her euphoric high Shepard was reaching the limit of his stamina and so after a few more thrusts into her ass he pulled out and came all over her breasts and stomach.

As he pulled away, he looked down at the asari he’d spent the last few hours claiming as his personal cumdump. Her body was coated in sweat and cum, her pussy was leaking cum into her gaping ass and she looked to be mere moments away from passing out.
  “Alright justiwhore you’ve properly satisfied your master for the time being. Now get your blue ass into the shower and clean up before returning to your room.”
Samara hearing her masters orders slid off the bed and after a moment of adjusting began walking to the shower. But with every step she his cum leaked out onto the floor. Shepard seeing this got an idea.
“And make sure you clean up this mess as well.” He said pointing at the trail of cum she’d created.
“Of course, master.”
 
 