Corrupt, of course.

"I think, i know what i want to do" Xandra purred evilly. "I think, I'll visit your sister, and your mother, Buffy. I have few ides, how to... spice up their lives a bit more."

"As you wish, Xandra." Buffy shrugged. "I had some plans to put Faith in her rightful place. And now, i think I'm ready, to put them into motion, at last. One request though about Dawn and Joyce. I beg you to not kill, or permanently damage their bodies. I'd love to fuck them on my own."

"Request granted. I promise, to not damage their bodies... much. And you, Willow?"

The petite demoness was still touching her body like most precious thing in the universe, measuring every inch of it's perfection.

"Oh, me? I think, i have some plans to... well, teach thing or two to Cordelia. I think, she needs some education in manners and what comes to bullies." she smiled dreamily.

"Have fun girls" Xandra replied, then teleported herself right in front of the Summers' house. And in the best possible moment, it seemed. As she sneaked her way through the front door, she saw Dawn. standing in front of the couch, where, her mother, was sleeping, naked, and wholly drenched in her own cum. Cloaking her presence, both in magic, and in visible spectrum, Xandra moved behind the couch to see the look on Dawn's face, and was pleasantly surprised, to see mix of shock, disgust, and - accentuated by big bulge in girl's pants - quite a lot of arousal. It was perfect. Through Xandra's mind scrolled thousands of perverted scenarios, how to corrupt and break Dawn using her own lust, and her mother's body, until one of it crystallized, and it was glorious. With wicked grin, Xandra dropped her cloak, revealing her perfection to already stunned girl. Before young hermaphrodite could do anything Xandra dissolved her body into pure magical essence, the launched it right into girl's body. Within second the fusion was complete. Xandra was now hidden in Dawn's mind with access to every bit of it, and used it fully...

Dawn had weirdest dream ever. First, she grew ten inch long cock without apparent reason, then, after valiant fight with urges which came with it, she reached her house, to find her own mother asleep, naked on her couch, completely covered in semen, still groping her cock, and breasts unconsciously. Seeing her like that, Dawn felt one of her deepest, darkest, and most hidden fantasies to come out. Her subconscious mind adjusted her dream fully according to it, and for the first time, Dawn allowed her fantasy to take control over her dreams. She felt her modest attire changing - her simple jeans and t-shirt combo shifted, darkened, and warped, as it took shape of full latex catsuit with exceptionally tight corset squeezing her waist, and accentuating her breasts. Her cock emerged through small hole on the crotch, while her simple sneakers morphed into over-knee boots with feet looking like hooves. From her back sprouted long tail, which was in reality, a whip with dildo-like handle, now buried deep into her ass. Satisfied with her looks, Dawn pick up her mother's **** body, and walked straight toward the door to the basement. As she reached it, the doors opened, and beyond their plain look, was scene simply from beyond - instead leading into the stairs, the doors opened right into small pocket plane, which seemed like it was took from erotic horror. There was everything, Dawn's fantasies could imagine to fit them: living ropes, commanded telepathically to do anything their master wish; metamorphic dildos, and anal plugs, capable to change shapes without any limits, and to secrete any substance from them; metamorphic paddles and whips capable to bring everything from inhuman agony, to instant orgasm; hundreds of various devices to bring pain and pleasure at the same time. But most important, in the center, was small, white gem in the floor, generating telekinetic field, allowing the victim to be held in any position without obstructing access to her.

As always, when Dawn saw her dream place, she felt her arousal bringing her almost to the edge with endless possibilities, how could she use it. And now, for the first time, she allowed herself to take here person, she wanted the most - her own mother. Trembling with anticipation, Dawn placed Joyce in the field then stroked her own cock few times, shivering with pleasure. Feeling herself only one stroke from orgasm, she stopped abruptly, and **** her will to calm her body down. Then with lustful smile, she bowed toward her mother, took her head by the chin, then, put sensuous kiss on her lips. For few seconds she enjoyed it, then took her mother's head roughly into her hands, then started to kiss her roughly, while she pinched Joyce's nose shut. For few seconds there was no reaction, the suddenly, Joyce's eyes opened, and her mouth parted. Dawn used her chance perfectly to **** her tongue between Joyce's teeth, releasing her nose at the same time. Surprised, and still feeling incredible lust, Joyce instantly responded to the kiss, enjoying her own tongue dancing with her lover's. Suddenly Dawn stopped her kiss, then stepped back. Joyce gasped in shock, unable to say anything. Not only she was just frenched by her own daughter, she was levitating in some invisible forcefield in the middle of hellish landscape, with her own daughter looking like personification of everything in BDSM, now looking at her with pure lust in her eyes. Too shocked, to say anything, she saw Dawn presenting her back to her, then bowing deeply, while her hand reached behind her perky ass, as she slowly started to remove whip handle from her ass. Joyce's mouth went instantly wet, as she saw, inch after inch of the handle sliding from her daughter's ass, until with silent "pop!" all sixteen inches of it went free.

Moaning with pleasure, Dawn moved her tongue along whip's whole length of the handle tasting her own ass. With cruel smile, she coiled her whip, then commanded the forcefield to move her mother into standing position. Then, she approached her, took Joyce's cock into her hand, then slowly started to caress it. When she felt her daughter's hand on her, Joyce's senses suddenly returned:

"Dawn! What are you doing? Release me at once!" she screamed, but only thing she got from her daughter, was cruel laughter, while she gripped Joyce's cock, and squeezed it hard. Joyce yelped with pain, as Dawn replied:

"It's MISTRESS Dawn, ****. From now on, you are not my mother - you are my private property. And I will do with you as i please." Joyce tried to protest:

"Dawn, please, no! Whatever possessed you, I know it isn't real you! Release me, and we..."

Dawn cut her short with one crack of her whip.

"I said, it's <Mistress Dawn>, to you ****! If you can't understand it outright, I'll beat it into you!" she snarled, as she positioned Joyce on her fours. Ignoring her mother's pleas for mercy, she quickly chose two of her countless metamorphic toys. One looked like plain, rubber dildo, but when, Dawn inserted it into her mother's pussy, it shifted filling it fully, while constantly vibrating and twisting. Joyce screamed, as she felt inhuman pleasure firing from her pussy, but Dawn was far from over. She inserted second metamorphic toy into her mother's ass. This one simply located itself in best possible depth, then, suddenly sprouted thousands of small globular nodules which started to caress Joyce's rectum in completely random manner. Semi intelligent, both toys send waves of pleasure into Joyce's body, while keeping her from cumming with inhuman perfection. With cruel smile, Dawn observed her mother writhing against invisible shackles of the field, while her toys mercilessly tortured her. Dawn's own cock stood painfully erect, as she was watching her mother's torment, but even being on the brink of cumming, she refused herself release - she'd only accept it, after, Joyce breaks. Still smiling, she approached, bound woman, and took her head by her chin, raising it toward her face. The look was not of this earth - Joyce mouth simply drooled, her eyes were vacant, her whole body was shivering with pleasure. For a second there appeared spark of intelligence in Joyce's face, as she saw only possibility for release:

"Da... Mistress Dawn... please... forgive me... let me cum, I'm begging you..." Dawn was bit surprised - she didn't expect her mother to give in so easily, but still, it was what she wanted.

"Oh, I will, now, ****. But you disobeyed me once, and I promised you, I'll beat understanding of your position for that." She laughed wickedly, as she moved behind her ****. With obvious pleasure, she caressed Joyce's buttocks for a while, then took few steps back, and prepared her whip:

"Who am I to you, ****?" she asked. Joyce only moaned. With wicked smile, she slashed with her whip, making her mother scream.

"I asked who am I to you, ****?!"

"My Mistress, my only Mistress!" Joyce screamed, as extra stimulation from pain brought her bit closer to release.

"Who are you to me?" Dawn demanded. Once again, she only got a moan as response, so she slashed her whip again. Joyce screamed, but still was unable to answer, took another hit, the another, then another, until, finally, gathering all strength, she had left, she screamed:

"A ****, Mistress! Only a a ****!"

Satisfied with response, Dawn dropped her whip, approached her **** from behind, then grabbed Joyce's buttocks, mentally commanding anal toy to remove itself, then prepared her cock to replace it.

Then the world come to stop. She was aware of her body still being in her pocket plane, ready to fuck her mother, but now, she stood in the center of endless emptiness, and in front of her, stood the most alluring demonic figure, she ever saw.

"Enjoying yourself?" she asked grinning evilly, while with one swift motion, she touched Dawn's forehead with her talon. And then everything clicked into the place. She understood now - the demoness possessed her, then lend her power, to fulfill Dawn's darkest fantasy, while making her believe it was all a dream. Dawn stood, frozen with dread, realizing what she did. And even worse realization, she loved every second of it. She was aware now, she could never come back to her normal life after that. And she didn't want to.

Aware of Dawn's thoughts, Xandra smiled:

"I see, you realized now, who you really now. I can give to you tools and powers to realize your fantasies. The price is simple: your soul, and your womanhood. The first is for me - I'll let you keep it, but, it will make you mine to command. The second is sacrifice, needed for you to obtain your powers. Do you agree?"

"Hell, yeah! I want it! Give it to me!" Dawn cried with joy. Xandra smile went even broader, then, suddenly, Dawn was back again in her body, her finger probing moaning Joyce's anus, as she felt powerful presence of Xandra behind her doing the same. With savage roar, she penetrated her mother, while Xandra did the same with her. To her surprise, Dawn didn't cum outright. She realized, Xandra used her power again, to make her last a little longer. Dawn moaned with delight, as she started to piston her mother's ass, as she felt both vibrations from her pussy, and rough grinding of Xandra's cock against her ass. Then suddenly, Joyce stiffened, as she cum, but Dawn didn't slow even a bit, throwing her mother into next orgasm, then next, then next. When Joyce's fifth orgasm approached, Dawn felt Xandra's talons gripping her buttocks harder, as she, and Dawn approached their orgasms. With unison scream of joy, Dawn released torrent of cum into Joyce's body, while Xandra exploded in her ass. The power of her orgasm combined with fulfilling her darkest fantasy, made her simply faint. She softly slipped herself out of Joyce's ass, and Xandra's cock, and fell to the ground, as she started to change into...