Anashtu continued stroking with his coiled incubi tail jerk on his sister Astrarotte's tail, seeing she is enjoying it if against her will. While his tail rapes her rear door, stretching and widening it as it slithers and drills deep inside her. Deep as his cock is buried now and has remained still so far. But now the mild shake and humps will come to end, as he draws out until tip remains buried in formerly virgin slits and displays glistening crimson of her virgin blood.....he then powerful forceful thrusts rams hard on her cervix! As if intending bust it and invade on her womb! He builds rhythm, slowly withdraw, powerful fast thrust back in. Shaking her body and her drool from corner of her lips is smearing the lab's floor as he sexually assaults his sister.<br/><br/>The researcher demon is watching all this on side, fingering and groping herself on sight of two hottest incubi and succubi making out, nay, incubi<em>raping</em>succubi, on her lab's floor. As her brother continues the thrusts which get smeared further by her succubi juices he huskily pants;<strong>"Sis, if I had known you would be this cute and this tight, I would had defied mother and raped you ages ago...."</strong>With husky excitement pace of his thrusts grow, both in her sex and ass into more powerful. But then there is pause....borther lifts her on his lap, her legs still spread and both holes speared in, his lips suddenly lock on hers and his forked tongue wraps and coils around her tongue and pulls her tongue out from her mouth. So she can't snatch teeth up or else she bites her own tongue as her brother deeply kisses her while doing suddenly surprising gentle cuddling, his hands moving from waist to her rump, clawing them, fondling her ass cheeks and then moving to her breasts, even if smaller, are still cute and plenty enough for fingers to grasp on and roll thumb over her nipples as brother breaks kiss contact and whispers;<strong>"If you submit to me I can become your chosen lover. It does not need end for this one time with me....could last all eternity."</strong>