One Friday morning, while David was watching television on his couch, the doorbell rang. He knew his daughter's friend would be coming to spend an extended week with them, over through the end of next weekend, but had not expected her quite so early. He stood and went to answer the door. He opened it to see Fifi, a bright eyed young lamb of 15, holding a suitcase behind her. The lamb blinked at the sight before her. She'd known David for almost a year now, though had never stepped foot in their home. And now he stood framed in the doorway wearing only a pair of boxers, hair messy with bedhead. Fifi cleared her throat and tried to look past it. Everything important was covered up anyway. "Good morning, David!" She said cheerfully. David smiled, leaning on the doorframe. "Well good morning, Fifi. You're here awefully early. Nikki is in the shower right now, but you can come inside and get settled for now." Nikki returned the smile and followed him in, shutting the door behind her. When she turned, David's large, canine form towered over her, blocking the way through the foyer. "We're happy to have you with us for the week, Fifi. Think of us as your second family." He said, crossing his arms. "Now there are some rules around here that I expect you to follow during your stay, understand?" Fifi nodded, her perky smile beaming. "Of course, sir, anything! It was so kind of you to let me stay for so long while my parents are out. I promise to pull my weight." "That's good to hear." David holds a hand out expectantly. "First off, I'll go ahead and take your clothes for you. I'll lay out your outfits for you as necessary." Fifi cocks her head to the side. It was odd that he would go through her clothes and pick what she'd wear, but it seemed harmless enough. "Oh, uh, okay. One sec." She turns and bends, unzipping her suitcase and ruffling through it for some of her things that weren't clothes. She hands the suitcase to David when she finishes, and he takes it. When she tries to walk past him, David doesn't budge. He holds his hand out again. "All of your clothes, Fifi." Fifi laughs nervously, assuming this to be a strange joke. When her eyes searched his, she saw he was serious. "Wait, really? But I'll be-" "Naked, yes. Those are the rules. Your parents put you in my care, meaning they trust my judgment enough to let me be in charge of you. You can too, Fifi." David's tone was reassuring, and Fifi bit her lip as she thought. "Well... I guess you're right..." She slowly undid her pants, glancing up at David as she pulled them down her legs. He watched her unashamedly, even growing hard. Next was her shirt, which she pulled over her head and handed to him. She had small breasts, perky and supple. "Can I keep my panties on?" She asked. David was a bit impatient but waved away the question. "For now. But by dinner, that modesty better be gone. There's no place for it here. You can put your stuff in Nikki's room, she should be out of the shower soon." He gave her directions and turned and left to take her bags and clothes to his room, stashing them away. Fifi went to Nikki's room to leave her things. While there, she sat on Nikki's bed and looked around. The walls were covered in a hot pink, fur-like carpet. The floor was a hardwood, grey-brown like very dark, rich chocolate, and was polished to a shine. Thick drapes that matched the walls hung over the window, which was at least 15 feet above the grass of their back yard. Even Nikki's bedsheets were hot pink, with a big fluffy comforter and elegant wooden frame. Stuffed animals were piled neatly in one corner, as well as lined up inside a closet. Three cropped T-shirts hung above them; a pink one with "Daddy's girl" in glittery swirly letters on the front, a bright orange one with abnormally long sleaves, and a dirty black one that seemed out of place in her otherwise clean and tidy room. This shirt was covered in small white stains, and had a very faint scent that Fifi could not place. It was then the lamb noticed some other odd details about Nikki's room. The fuzzy pink handcuffs hanging from each post of her bed, the collar and tag among her displayed jewelry, sex toys set out like an alter on her desk. On the wall hung framed pairs of panties, each with a small note in the corner. Fifi stood to get a closer look, baffled as she realized what all of this was. Fifi read the note on the pair hanging in front of her. Nikki's first anal orgasm - 12/25/20XX The panties were red with white trim, christmas themed, with little bows on around the waist. These were from last year. The frame next to it had a black lacey pair with a hole in the crotch. The note read: Nikki's first anal knotting - happy 14th B-day! Two years ago. Fifi followed them all back to the first pair, small lavender panties with a small drop of blood on them, the crotch strap stretched out a bit and rumpled. The note was a beginning to yellow with age. Nikki's first period, age 7. First penetration. First penetration? Age 7? This couldn't be right. Yet here was a wall of rumpled, ripped, and stained panties detailing the timeline of Nikki's sexual advancements since her first period and loss of her virginity, framed like achievements. Fifi was shocked. Sure, Nikki and her father had a close relationship, but in the way that they understood each other and cared deeply for each other. But to know that her father had been fucking her in this room all these years was... Hot? She wasn't sure why. Maybe it was something about their closeness. It was so wholesome, she envied their relationship. And David was such a nice guy, despite the strange rules he had about the house. And he was also kind of hot, not that she would admit that. Standing there, staring at the soft purple panties on the wall, Fifi began to rub her thighs together, fantasizing about David's fatherly personality, and his chizzled chest and stomach... Her mind drifted to the beach trip she joined them for, when David stuck a shovel in the sand next to her while she sunbathed. She'd looked up to see a beautiful sandcastle... framed between his legs. Hands on his hips, he admired his work, and Fifi's eyes were locked to his rear, and his glorious sack wrapped in that red speedo. She'd touched herself in the tub that night at the hotel, and only now recalled the faint clapping she'd heard through the walls, unsure if it was her fantasy. She'd shared a bed with Nikki that night, probably with Davids load inches away from Fifi's womb, inside Nikki's, wrapping her in its warmth through her as they'd cuddled. Fifi is snapped back to reality by the sound of the door opening. She turns quickly, seeing Nikki shutting the door behind her, a big grin on her face. "Fifi! Oh my goodness, welcome to my room!" The vulpine ran to Fifi and clasped her in a hug. She was naked, her fur damp from the shower. Her supple breasts bounced about freely as she stepped back from the lamb. "Nikki! Hey! You, uh... You seem good. What, uh... Is all... This?" Fifi motions to the wall of frames. Nikki doesn't bat an eye, instead she giggles and blushes. "Oh, those are just mementos my dad likes to keep. I know it seems weird, but its harmless really." "Huh. Why do we have to be naked?" "Well, its part of our religion. Women are not permitted coverings in the household. We practice Deterism." Fifi was shocked. Deterism was a huge taboo, a cult left over from the ancient days, which had recently begun to resurface. She didn't know much about it other than that most people thought it was evil. But Nikki couldn't possibly be evil, she was far too kind hearted. Fifi didn't have any beliefs of her own, and her curiosity, combined with the heat in her loins, made her want to know more. "What else should I know about your religion?" Fifi asked nervously. Nikki made a face, a cross between empathy and excitement, and it made her worry. "Well," she began. "I hope you don't mind losing your virginity."