Eris's eyes flashed, and zoned, her expression changed from fear too complete submission. Blank expression as you now completely dominated her mind.  Her body loosens and becomes completly submissive to your every order, Erin watching her sister with sadness lose herself. "Oh well" She says, looking at her tattoo's.<strong> "Its time to lose my memories I guess"</strong>she says, seemingly accepted.<br/><br/>Then you give your order, which causes Erin to take a step back. "W-wait! No! Please!" You dump the toys on the bed which Eris grabs with glee, Erin freaking out. "No! No you can't do this! You monster! I refuse! I won't do this!" She tries to run but Eris jumps on her sister, tacking her too the ground, pulling out a very large buttplug with plastic spikes on it, shoving it into her sisters ass causing her to scream. Moaning as she straps on a double edged strap on and begins making her work.<br/><br/>She had her sister's hands chained to the bed-frame, and a collar put on her. She used the double-ended strap on and really began fucking her, raping her sister in front of you, spreading her sis's legs while she cried out in agony, begging for it to stop, which Eris would respond with a slap to the face. Pulling on her nipples causing her to cry, after about an hour of raw missionary rape she pulled the strap-on out, cum with bits of blood was covering it. She pulled out the butt plug as she grabbed two very large, comically sized dildo's. She tried to pull and get away, begging her sister with everything she had to come to her senses, only to get another few slaps to the face. The first Dildo went into her ass, causing her to cry out again, tears falling from her eyes while the second shoved straight into her tight cunt, her letting out another loud cry at it nearly tore her in two.<br/><br/>Eris then proceded to sit on her sisters face, telling her to lick, which she at first refused too but a few smacks and hits caused her to comply, licking her sisters cunt while crying out, Eris using the large dildo's on her, moaning a bit while riding her sisters face. That went for about 30 minutes, Eris cumming all over her sisters face before getting off her. Still naked she gave her sister a few good smacks to the face before pulling out the dildos and standing in front of you.<br/><br/>Erin laid there, defeated, her eyes open and staring at the ceiling, haven been raped by her sister, and having pleaded for the half hour, only to find it futile. Her legs shook, she didn't even try to pull against her chains anymore.