Kat giggled feeling her brother inside her, shrinking every second at her total will.
"You know something, you're definitely better like this", she massaged her belly, smiling by noticing how Dan was getting smaller every second, "I didn't do this just for getting rid of you, but also did it for me", Dan was an unconscious egg inside his older sister at this point, "As you see, every girl in the family when turns 18 they are official witches with access to magic", she slowly sat on the couch, "However, when a mother has more than one children the magic of the daughters are reduced if they had a brother, or divided between the girls, in this case mom had you, meaning you halved my true potential", she squeezed her belly smiling, "But now I'm going to take what's mine! As I'll be their only daughter. Don't worry about nonsenses, I'll cast a spell that will make you everyone forget about you, being me the only one that remembers, it will be fun, mom always wanted a granddaughter", Kat explained, "I should hurry up, remember that I lost several eggs with my monthly period, which won't take too long to come", she laughed ready to begin her adventure.
Kat waited until night, she put on one of her sexiest dresses ready to party and give Dan a father, not like that mattered except the fact to reborn him. Now in the local party club she saw many candidates for her plan, eventually keeping the eye with one attractive man, he winked to her, Kat knew it won't take to much to accomplish her mission. Eventually Kat pulled the guy to a room alone, taking off her panties keeping the dress, the man just removed his pants and underwear revealing his penis, about to take off his shirt, "Come on, we need to be fast, just fuck me right now" she spread her legs showing her wet pussy, the man didn't think it twice.
The session lasted some hours, trying many positions Kat was enjoying herself even if it wasn't part of her idea, feeling the dick inside her felt better than she remembered. After waiting in their pleasure meeting the guy came inside her, Kat smiled feeling the fluid in her insides, she put her panties again and lowered her dress again, saying goodbye to the guy she just fucked like didn't exist, running to her home.
She arrived her home, her parents were outside leaving her in "charge of her brother", she sat on her bed after getting undressed until completely naked, smiling watching the blankets getting wet as the liquid leaked from her vagina, "Ready to be conceived Dan?", she giggled casting a spell. None of the sperms fertilized any of her eggs, she chose an specific sperm that would enter inside her, it would make Dan a girl, an obedient girl that wasn't an annoyance or a terrible person, then the sperm survived all the way to her eggs, then fusing with Dan, making him grow and grow every second. Kat's plan was successful, she would give birth to a sane girl in exchange for her annoying brother, a fair trade for her, she felt how her belly quickly inflated, breasts getting bigger turning her small B cups to a pair of D ones, and she wasn't done, she made the process to last 1 week instead of 9 months, feeling how she transformed into a mature version of herself every minute.
Days passed and Kat notice how time affected her, she was getting turned into an attractive mother, a MILF for some people, having a pair of F cup breasts, perfect curves, getting taller and developing an attractive face, she was becoming the powerful witch she was destined to be, maybe even greater than her mom now that she was getting completed absorbing the energy of Dan's past body, she was one day away to give birth, looking how in familiar photos Dan began to fully vanish, having Kat as their forever only children, she smiled again.
The next day Kat was ready, the moment she waited for so long, she opened her legs in her bed, feeling how Dan came from her deeper insides, she made the process painless so she didn't have any difficulties. After some minutes Dan was born again, a little baby girl that was now Kat's daughter, cutting her umbilical cord she covered her in a towel, holding her in her arms and breastfeeding her. "What if I call you... Danielle? Sounds really cute and kind of familiar to me" she giggled. Her plan was complete.