Unfortunately before they reached the door they were interrupted by a loud female scream. “W-W-W-WHAT HAPPENED HERE?!? H-H-HELP!!!” the girl with headphones around her neck cried before running back into her room.
Of course Mary and her family had immediately recognized her, Jenny, the youngest member of the household. Despite still being a teen she was quite the early bloomer, which blessed her with a very shapely figure. Though mentally she was still in her rebellious phase, the reason why she had her hair in a pink-dyed pixie cut and spent most of the time alone in her room listening to music. This wasn't even the first time everyone had forgotten about her because of this.
“Oh no, we forgot Jenny again,” both of Robert’s heads said perfectly synchronized.
“Quick, we have to share this with her,” one of Melissa’s heads added.
Mary already had an idea on what she wanted to try with her younger sister. The door forgotten for now, she figured it wasn't important if they didn't even try ringing again, the dragontaur took a certain candy out of the tub and let her parents carry her to Jenny’s room. Fortunately the bedroom doors couldn't be locked and so they easily entered. Upon their appearance Jenny quickly huddled into the distant corner.
“Mom, Dad, Mary, anyone, even Mark, help me,” she squeaked in terror.
Mary couldn't help but give a little chuckle at the irony. “Don't you get it, Jenny?”
“We're right here, Sweetie,” Melissa continued.
“We may look different, but we're still your family,” Robert added.
Seeing her sister's fearful look slowly being replaced with confusion, Mary decided to explain, “We found these candies, which when eaten not only turned us all into dragons, but merged us together. Mary, Mom, Dad.” She pointed at the respective head(s). “The other two dragonesses doing it in the living room are Mark and our neighbor, Gabriel.”
“A-A-And when are you turning b-back?” Jenny managed to stutter out.
All five dragon heads started laughing. “Turning back? Why would we want to do that? This body is wonderful.”
“I’ve never felt so alive and full of energy in my whole life.”
“We’ve never been closer as a family.”
“Maybe you haven't gotten it yet,” Mary leaned in to slowly stroke her younger sister's face with her claw. “But the reason we're here is to share this wonderful gift with you.” Her claws went down and with a few quick and precise slashes managed to cut off her sister's clothes without harming her, leaving her sister entirely naked.
Said sister couldn't take it anymore, jumped up to her feet and tried to run past them out of the room. Unfortunately for her, her parents’ four necks proved faster and more flexible than expected, quickly wrapping around the girl and pulling her close until she ended up with her back to their front and her head between Mary’s boobs.
“Please! Let me go! Something’s wrong with you!”
Mary started stroking her sister's hair. “Don't worry, Jenny, you're just confused. We just want you to feel as good as we do, so we can be one big family again.” With one claw she held a black, dragon-shaped candy in front of the younger girl’s face. The closer it came to her lips, the wider Jenny’s eyes became. Until Mary quickly moved her arm to pop the candy into… her own mouth.
“Huh?””Huh?””Huh?””Huh?””Huh?”
Replying to her parents’ four confused stares, Mary answered, ”I was curious. We already know that if you eat this particular candy, you’ll turn into a dragon, if you aren't already one, and merge with the next dragon you make contact with. But is this really restricted to dragons? Let's see if a dragon can merge with a human.”
It didn't take long for Mary to feel the candy taking effect, though Jenny didn't notice at first in her struggling. Then she suddenly lost all feelings in her legs, urging her to stop and look down. To her horror she saw her feet having sunk into the dragon’s body already and the rest was slowly following. Jenny’s struggle continued, more panicked than before. Her family didn't mind it, quite the opposite in fact, as her movement proved to be very stimulating to them. As more of Jenny’s lower body merged away, she tried to push herself off with her arms, only for her hands to also sink into the draconic flesh, followed by her arms moving upwards on their own until they were coming out of the underside of Mary’s boobs. Even when her ass and vagina disappeared she didn't give up her struggle.
The merging stopped. Jenny had pretty much become a human figurehead for her dragon family. A loud gasp from the girl signaled the connecting of their nerves. A whole new world of sensations opened up for Jenny. The scales, the heads, the claws, the boobs, dicks and vaginas. She felt strong, powerful, sexual, loved. She didn't know when exactly she had started to do it, but the feeling of the… her… their stiffening dragon dicks made her pant and blush heavily.
Mary leaned forward, placing her head beside the one of the girl coming out of her front, and softly cupped her breasts. “How does it feel now?”
“Please… more… I need this…” she said between pants. With her hands also merged into her sister's chest she was completely at her mercy.
Mary couldn't deny her cute sister her request and started groping and kneading Jenny's breasts. As the girl opened her mouth to moan, Mary caught it with her own and locked her in a passionate kiss. Their parents, not wanting to be left out, began nuzzling and/or licking the remaining parts of her body. Jenny herself was in heaven. Her whole body felt wonderful. She never felt closer to her whole family. What was she thinking trying to resist such bliss?
The pressure under their body was increasing, though Jenny was already anticipating it. The parents tried their best to delay it as long as possible, but soon the dams broke and two jets of dragon cum shot out from under their body. Jenny didn't mind her room being covered in their spunk, in fact she was relishing in her first orgasm as a family. If it wasn't for Mary's dragon tongue still dancing around inside her mouth, she probably would have screamed in pleasure, but as it was she only managed some loud grunts as her body and mind were assaulted with ecstasy.
As the orgasms wound down and everyone enjoyed the afterglow, Jenny spoke up, “Mom, Dad, Mary, I’m sorry for causing such a ruckus before.”
“Don't be, Jenny, you couldn’t know better and admittedly it is a weird thing to get used to at first,” one of her father's heads replied. Mary then proceeded to embrace her from behind (other ways weren't possible, obviously) and her parents’ heads coiled around them in a family group hug. They felt closer to each other than ever before.
Back in the living room they found Mark and Gabriel lying on the floor in their own post-coital glow. “And? Is everything alright?” the feral dragoness asked lazily.
“Yup, we spent some quality bonding time together and all my issues have been cleared,” Mary’s human front passenger answered as one of her mother's heads nuzzled against hers.
“Oh yeah, I checked the door while you were gone. There was only a big package lying on the front porch. It's in the corner over there.”
Of course four-fifths of the family immediately wanted to check out what it contained.