Timothy sat alone in his bed in the darkness of his bedroom. The sound of rain assaulting the outer walls of the house were all that could be heard and the occasional bolt of lightning would brighten the room for a second. The others were all down stairs for a movie night. but this time they were watching a scary movie, which Timothy never liked so he stayed up in his bedroom. Having had enough of his toys and games for one night, he considered trying to fall alseep. For awhile he lie under his blanket, tossing and turning with his eyes closed. As he eventually came close to dozing off, he felt the shifting of his matress as something else had leapt up onto the bed. The blanket slid off from the human as he rolled onto his back, opening his eyes. It was hard to see with only the glow of the moonlight, and his diaper did a pretty decent job of obstructing his view as well to the rest of the bed. Finally, Umbreon stood tall with his face hovering between Timothy's legs. He leaned in, pushing the boy's legs apart with his paws and getting close to the boy's face.

"Umbri-!" The pokemon called to his brother with hushed excitement before leaping back off the bed.

The black pokemon's yellow rings glowed, illuminating things much better. He hurried towards the door and looked back at Timothy.

"Vee...? Eevee!" The boy said with excitement, realizing what his brother was so eager to do.

The Umbreon raised a paw to his mouth, signaling the little human to remain quiet.

"Vee-" The little human said quietly, covering his hands with his mouth.

The lights outside the room were off, which could only mean everyone else had gone off to bed as well. It was times like these Umbreon and Timothy liked to sneak their way down to the kitchen and have themselves a snack before bed. The little boy leapt out of bed with a thump that was cusioned by his socks. He tip toed after the dark type, who silently lead the way.

Stepping out of the room, the house always seemed much bigger with the lights off. The terrible weather didn't help this feeling either, but at least the heavy rains would help mask any sounds they made. It always seemed the quieter they wanted to be, the louder the noises they made were. The hard, wooden floors which would typically thump softly with every step now creaked loudly if they weren't very gentle with their steps. The pair were very cautious and were nearing the fork in the road between the hallway and the stairwell when they heard the bathroom door open. The pair jumped quickly against the wall, their hearts pounding in their chests. They breathed a sigh of releif when they heard another door shut, much desired proof that the bathroom visitor had gone to their room and wasn't coming this way. Carefully, Umbreon and the boy walked to the stairs. Walking in his diaper was one thing, but trying to be sneaky was a massive chore. The little human had to put his but in every step, swaying it so he would not lose balance. Suddenly a loud boom tore through the silence as a bolt of lightning flashed nearby. The sound startled the pair and Timothy bumped a tall table decorating the walk way. It wobbled and the human tried to hold it steady, but the vase atop of it began to lose balance as well. It rocked its way off the table and Umbreon made a dive, managing to stop it from hitting the floor with his paws. Though they succeeded in preventing the loud shattering of the vase, the two were now more nervous than ever before. They replaced the pottery back onto the table and reluctantly continued their night time journey. Now at the top of the stairs, the two staired down. They bent around in the stair well, which was walled off from the rest of the house, in a square like U shape. Umbreon began to descend, but Timothy was feeling a little intimidated. His legs still shook from the startling thunder and so he climbed his way down one step at a time, treating each step as if it were a massive drop.

He got to the bottom of the stairs, which emerged into the Living Room and Umbreon was waiting for him. Now an entire floor beneath their sleeping siblings, they could afford to be much less careless. They both hurried eagerly to the kitchen, thinking about the sweets they'd soon devour. They quickly got to work in the kicthen, with excellent team work. Timothy got the fridge open as Umbreon leapt onto the counter, passing down a pair of cups to pour milk in. The pokemon grabbed the lid off a cookie jar, shoving his head in and hastily grabbing the sugary treats. Before long, they had amassed a fine collection of a variety of snacks. They went off to the living room and climbed onto the sofa. Gorging themselves on junk food until they couldn't eat any more, the pair leaned back into the cushions of the couch. Their bellies were full and cleaning up the mess they had made sounded like an impossible task, but it had to be done. Umbreon lapped up milk from his cup when he noticed the milk dribbling down his brother's chin. The boy was far too used to bottles and sippy cups, as he was too clumsy to drink from a regular glass. He went over to the little human, and looked at the milk on his face. He began to lick the droplets of milk from the boy's chin, working his way up to his mouth. Once he was licking the milk from the boy's lips, Timothy locked his lips with the pokemon. Umbreon leaned away in surprise, staring at the human with his red eyes. Kisses were common between the two, but Timothy held himself in for quite awhile. Before he could ask himself where the boy might have learned such a thing, he became over run by other urges.

Umbreon went back in, kissing his little brother in much the same way Vaporeon had just the other night. Timothy was much more comfortable this time around, as he was very close to Umbreon and much more open to letting him play in such a manner. His muffled giggles could be heard as the pokemon's tongue entered his mouth as the pair snogged away. The kissing stopped and Umbreon focused his attention down to the boy's diaper. He pawed at the sitting child's diaper, which crinkled and poofed back out into shape. Umbreon leaned in, clenching one of the tapes with his teeth before tearing it off. The diaper, now free on one side, was pulled towards the end that remained taped. This gave Umbreon enough room to see what he had been curious about for awhile. Though he was present for most of Timothy's diaper changes, he never quite got a good look at his little boy genitals, but now he could see them very clearly. He was amazed at the tiny little dick and balls that greeted him. A tiny little nub of a penis that sat atop a little sack not much bigger than it.

The young boy could sense Umbreon's interest in what was inside his diaper, so he spread his legs to allow more space for the pokemon to lean in. Umbreon did not hesitate to take advantage of this and got closer. He sniffed the baby powder coated genitals before giving them a lick. The powder wasn't the best taste, but it was the only way to get it off. Soon enough, the white and powdery surface of Timothy's genitals were clean of powder and wet with saliva. Umbreon wasted no time welcoming the small cocklet into his mouth. Gently he sucked the little human's penis with the same enthusiasm the boy would a pacifier. Though the human was too little to get any kind of sexual gratification from the act, he did enjoy the feeling of his delicate bits inside Umbreon's wet and warm mouth. Umbreon then sucked his brother's testicles in with the penis. Minding his teeth, he swirled the little boy's junk with his tongue. The little human stroked his favorite brother's head as he savored the tickling sensations the pokemon provided. The act had gotten Umbreon highly aroused, his red rocket of a cock emerged solid from its sheath.

The pokemon sat down before Timothy, who's drool stained region now lie exposed. Umbreon struggled a moment to tape his diaper back using his teeth, but with the child's cooperation he succeeded. Now the human's eyes were fixated on his brother's cock. The shiny red member was much larger than his own. He reached out to touch it and Umbreon did nothing to stop him. He grasped the shaft into his hands, gently squeezing the muscle.

"Umbri~" His big brother cooed out, and Timothy looked up to him.

"Ee.... eevee?" He replied in a curious tone.

The Umbreon nodded, encouraging his baby brother to continue fondling him. His little hands explored up and down the pulsing dick as its tip secreted a bead of clear liquid that sat atop it. Timothy stared into the droplet as it slowly grew in size, threatening to dribble downward. He then got an idea, if Umbreon loved having Timothy's penis in his mouth, maybe the young child would enjoy the same? 

"Haaaa- mmmm!" Umbreon heard his brother sounding like he usually did when opening wide for food, before his voice went muffled.

He felt the little human shove his mouth onto his cock, and rather deep. The big brother was losing himself at this point. As the human fondled the shaft of his cock, his little tongue licked away at his tip in the back of his mouth. As the child continued to let out his muffled moans, Umbreon placed a paw on the child's head as is heart rate skyrocketed. He knew the safest thing to do before cumming would be to pull out, as he wasn't sure the child could handle what was about to happen. Yet the horny brother could not resist, and his member stayed where it was. Umbreon swalled and looked down at the hairy scalp of the young boy as he began to fire semen right into his mouth. Glob after glob of warm, sticky squirts shot from his tip at the back of the boy's mouth. The child attempted to swallow the bitter liquid, as it had nowhere else to escape. An insignificant amount managed to squeeze between the child's lips and the pokemon's pulsing erection. Everything else pushed its way down the child's throat as he could no longer keep up. He began to cough, but his brother's cock suppressed the escape of the cum as a decent amount managed to find an escape out Timothy's nose. Finally, he managed to spit out Umbreon's dick, sending a mist of his brother's seed into the palms of his hands as he coughed into them.

With his passages cleared, Timother was able to breath normally once again. He looked up at Umbreon, as if to find a sign of approval. Umbreon smiled at Timothy.

"Vee!" He cheered in excitment, clenching his sticky fists at his big brother's satisfaction.

Umbreon assessed the mess his brother had made. Cum dribbled down from his mouth much like the milk had earlier and also from his nose. His hands were coated in a thin layer of the sticky substance. Though no drops had landed on the sofa, some stray drops he noticed had managed to land on his diaper. Umbreon licked the boy clean before sending him to wash his hands. The pair picked up after themselves to leave no evidence of their secret snack time, or their more erotic adventure. One the way back, Umbreon let Timothy take the lead, admiring the padded posterior of the young boy before him. The night had left him feeling bold, and he began to fantasize about how else he could obtain sexual relief with his brother.  He was already dreaming about how that soft, diapered rump would feel if he grinded his cock on it when it suddenly hit him, quite literally. Timothy had a misstep going up the stairs, and Umbreon had managed to break the child's fall, catching his butt into his face. Both were ok, and laughed it off and Umbreon assisted the child with climbing the stairs, pushing the boy up faster with his face. They rushed through their final stretch knowing their room was the final destination, and faking sleep was easier than coming up with an excuse. They reached the room with no other issues and quickly got into bed. The young boy curled up under the blanket, and the black furred dark type spooned along his backside with a paw around the young boy. Umbreon dimmed his glowing and with full bellies, the two brothers dosed off for the night.

Though the two had gone to sleep, two other residents of the home remained awake. Espeon sat in Sylveon's room as the two seemed to be having a discussion. The purple feline hung a paw beneath her mouth, with a giggle as Sylveon scratched his chin with a ribbon as he stared off into space as if considering something. Espeon was no stranger to the sights, sounds and smells of sexual acts. She knew the heavy scent of semen when it hit her nose and her little brother smelled of it more often than not after his past few showers. It also seemed Timothy and Umbreon were not quite as stealthy as they liekd to hope. The psychic type always knew who was walking around the house by the sounds of their foot steps, and when she hears a certain little human and dark type's feet pittering and pattering in the night, rules were about to be broken. Unbeknownst to the two brothers, their big sister was watching them, peering down from the railing upstairs and she saw everything. Though she decided not to cut into their playtime and instead went to suggest an idea to Sylveon. Everyone in the house earned their keep in some way or another. Though Timothy wasn't quite smart enough to handle most household tasks, perhaps his more innocent and submissive nature might aid his family some other way? After she spied him and Umbreon together, he certainly seemed capable of the task. Sylveon was really seem on board with the idea. The family mainly had each other for company. Though the idea of breeding with each other for fun never crossed each other's minds, it was clear at least two of them didn't have any issues trying it with the young human. They loved him like one of their own, but perhaps the taboo of sharing sexual acts with someone from another species drew them in. The more Sylveon pondered, the more the idea began to excite him. Even his very young age merely added to the excitement.

It all seemed agreed, they would have a family discussion about this, and Timothy's life in his home was about to get much more interesting.