By the time Vivi and and Jay had begun their trick-or-treating run, the sun had already set. After being held up in school, the pair now had a lot of catching up to do, if they didn't want to leave empty-handed. Having already ransacked all the candy on their own street, the raccoon siblings sprinted through a dimly-lit alleyway, looking for a new set of houses. Luckily, Jay spotted a whole new street around the corner - it looked small and cozy, with no other cubs and families in sight. "Jackpot!" He whispered over to his sister. Slowing their pace a bit, the siblings made sure to get their costumes in order. The older one, Jay, was a 10-year-old raccoon boy, dressed in a mummy costume. This year, he'd taken his dedication to proper Halloween attire to a whole new level, making sure not to wear anything but the appropriate mummy wrappings. They were attached all around his body, with stripes of his grey fur alternating with bandages that circled his legs, arms, torso, and even tail. He wasn't even wearing shoes! His sister, on the other hand, had taken a completely different approach. Vivi had masterfully combined a store-bought witch costume with frisky attire that her dad picked out with her. The 8-year-old cub wore a tall, pointy witch hat and a short black skirt with purple frills at the edges. Her short legs were covered with stretchy, almost shiny dark purple leggings. A set of tall black boots finished her getup. While her brother was carrying a pumpkin-shaped bucket for candy, Vivi was clenching a round-bottom flask, filled with a potion that looked suspiciously like green soda. "Ughhh.. Hold on, Vi!" Jay muttered in frustration, stopping in front of someone's closed garage. Vivi could see that he was trying to fix something on his costume, but only as she stepped closer could she see her brothers' tip poking out from underneath a bandage. "Sssorry... I d-didn't expect you to look this good tonight..." He kept on mumbling while failing to tear his gaze away from his 8-year-old sister and her slutty witch outfit. "Aw.. You're so silly! Want me to help?", Vivi giggled, watching her embarrassed brother squirm while trying to stuff his cock back underneath the mummy wrappings. The third-grader had grown up in a very 'open' family, where everyone was allowed to fuck anyone else - but even at their age, the siblings knew to hide their relationship from others. "Damn, I wish... But what if someone sees us?" Jay whispered back in her sister's ear, as he involuntarily bucked his hips and freed the entire length of his raccoon cock from its confines. The gooey globs of precum that were already dripping on the pavement let Vivi know that her sweetheart of a brother was more than willing to take that chance. "C'mon, let's go over there! I bet you'll cum twice as fast - we've never done it on someone else's front lawn before!" The raccoon girl squeaked excitedly as she dragged her taller brother onto a flat lawn by the side of the driveway. The street lamps weren't lighting this part of the street, giving the incestuous pair even more reasons to get it on. Just as the witchy cub tried to tug her leggings down, Jay grabbed her hands. "W-we don't have the time! They'll see us!" Using his strength, he easily forced his sister to bend over, her hands and feet resting on the grassy lawn while her rear end was raised up high. "I've got a better idea." Jay added proudly, almost basking in his own kinkiness and ingenuity. Vivi's fluffy tail was swishing in a mix of excitement and nervousness. Lining up his dripping cock with the imprints of Vivi's pussy on her leggings, he grunted and thrusted forward, pushing as hard as could until the fabric of her clothes began folding into her hole. Jay's entire body shuddered when he felt his member grind against the silky smooth nylon 'condom' that he was stuffing into her sister's tight hole. Vivi's body bucked forward as the tiny raccoon felt a bit dizzy - both from her horniness and the overwhelming feeling of fabric grinding along her insides, stimulating her tight opening in all the best ways. Raising her right hand off of the ground, the cub carefully brought it to her crotch, rubbing the nylon covering her clit while her mouth opened in a silent moan. By this moment, Jay had finally managed to thrust his entire length down into Vivi's tight cub pussy - wet fabric stuck to the insides of her vagina, letting him furiously pound her hole by effortlessly sliding in and out. His raccoon cock was spurting precum with every thrust, streams of his transparent juices flowing back out of her sister's opening. Glancing to the side, the boy noticed a small family of a couple parents and their cubs walking out from a faraway house. They were still several houses away, so they couldn't quite make out the incestuous pair yet, but knowing that they'd just fucked in front of several completely innocent strangers was what pushed Jay over the edge. As his heart was thumping in arousal and fear, the raccoon grabbed her sister's tail and yanked her upwards, the third-grader's frail body easily lifting up as he pushed his cock all the way in, his seed gushing out into Vivi's tight pussy. The cub girl trembled as she felt waves of sticky cum shoot through her brother's makeshift condom and start filling her undersized hole. Finally, after giving her own clit one final squeeze between her pawpads, Vivi rolled her eyes as her juices squirted through her clothing and onto her boots and the grass below. Panting heavily, the exhausted siblings collapsed onto the grass, pretending to stargaze just convincingly enough that the aforementioned family passed them by on the other side of the road. "I... W.. why did this feel so good?" Jay could only mumble, snuggled up by his sister's side. "Damn it.. Your clothes are ruined!", he said while nodding at Vivi's costume. Even despite its dark color scheme, all the wet streaks and cum stains were very obvious - they covered her boots and leggings in an assortment of chaotic splashes. "We've gotta at least pull it back out..." The raccoon boy whispered quietly, grabbing the spherical flask that Vivi has set down on the ground and pouring all of the soda out onto the grass. Before his sister could say anything, he'd already stuffed its neck up into her open hole, his warm cum still dripping back out of her. With a light tug at her leggings, Jay pulled the fabric that was lining her insides back out, more waves of his seed gushing out of the cub hole. The gooey substance filled the flask almost halfway before Vivi could manage to hold the rest in on her own. "Come on now... There's still a lot of houses to cover." Standing up, the cub lifted his sister up from the ground, nodding at the front door of the house that they'd just fucked in front of. Luckily, no one was near the windows to watch... Stepping up onto the porch, Jay glanced back at the other cub and raised up his plastic bucket. "Strike a pose while I ring the bell, alright?" Vivi knew exactly what to do as she smirked at her brother. Squeezing her legs, the raccoon held one edge of her skirt in between her fingers, raising it up and showing the large dark stains at her crotch - while her other hand held onto the flask with her 'potion'. By the time the doors were opening, she was already tilting her head back, her lips wrapped around the neck of the flask, waves of her brother's sticky white cum rolling down her throat. "Trick or treat!"