A thud sounded from the top of the house, drawing the attention of the entire weasel family who were just finishing dinner.

"What was that?" asked the mother, somewhat concerned about the strange sound.

"The wind, Mom, whenever any breeze rises, the branches of the forest trees crash against my window, and this time of year it happens all the time," the young adult explained in detail.

"Now I understand why you wear your headphones at full volume," said the boy's father, as he cut a hard-boiled egg in half with his fork.

"That's not because of the banging on the window, it's so I don't hear when you call me," the young weasel replied, before wiping his lips with a napkin, setting his silverware down on his plate and getting up from the table.

"I thought so..." replied the father.

As the rest of the family finished eating, the young man said goodnight and went upstairs to his room. When the weasel opened the door to his room, he went inside and closed the door again, locking it.

In the darkness of the room, the young man saw the window overlooking the backyard open, and on his bed a huge beast that, sitting on the mattress, was the same height as he was.

"Could you be more careful going in?" growled the young man, before turning on the bedroom light.

The huge creature had the appearance of a bat, but of colossal size, with overdeveloped muscles all over his body, immense pectorals, skinny, bony abdomen and limbs, long, sharp fangs and claws, and a mane of silky fur around his neck that trailed down his chest.

The giant chiropteran simply ducked his head and groaned, trying to apologize for his lack of subtlety in entering his lover's home.

The weasel squeaked and shook his head in disapproval, then sat down on the bed next to the huge beast and hugged it, kissing his shoulder tenderly.

A soft squeak of delight erupted from the muzzle of the bat, who stuck out his long tongue and licked the small mammal's snout. 

Fred had encountered the monstrous creature two months ago while walking through the forest, the young weasel had gone deep into the forest and had sprained his leg, at that moment the beast found him and instead of devouring him, he carried him into his arms and returned to the backyard of his house. A few days later, Fred returned to the place where they had met and waited until he saw the bat again, offered him food as thanks and they became friends. The creature did not speak but made himself understood with sounds and gestures, he was more civilized than he seemed and this made Fred think that he was a citizen just like him but transformed into this enormous beast halfway between a feral and a being of the same society, perhaps even a neighbor that the boy did not know.

A few days earlier the huge bat, whom Fred had been used to calling 'Chirp' as it was one of the beast's most used sounds, had licked the weasel's lips to clean off some of the jelly he had left and, instead of stopping, Chirp stuck his long tongue into the other male's mouth, grabbed Fred by the shoulders and kept pushing his appendage until their snouts met. The weasel quite enjoyed that approach and, the next day, the two males kissed again and masturbated together.

Yesterday, Chirp had dared to enter Fred's room through the window in the middle of the night and had given the little mammal his first blow job. After swallowing the weasel's semen, the huge creature had stayed to sleep together with the other male in the same bed, and had left a few minutes before sunrise.

"Hey...I really liked what we did yesterday," the weasel stated.

"Chirp chirp!" exclaimed the big bat, ducking his head to rub it affectionately against the other mammal.

Fred laughed and kissed the lips of the hideous beast, as his small hands caressed the creature's immensely soft body, sinking his fingers into the silky mane that crowned the bat's chest and trailed down in a fine line to his testicles.

Chirp rose from the bed, walked over to the window and gestured with his head pointing toward the forest. Immediately, with supernatural agility, the creature flew out of the house and hovered, flapping gently at the window.

The young mustelid approached the window and watched as the monstrous bat stretched out his leg, offering it to Fred to hold onto. The weasel made a worried gesture but, after Chirp squeaked again, the young man sighed and reached out the window with his torso so he could stretch his arms out to grab hold of the beast.

As the weasel held on with his arms and legs, the big bat soared into the night sky and disappeared into the thicket of the forest. The journey lasted several minutes, the speed at which they were going seemed high judging by the cold wind that crashed against the small mammal's back.

The flight ended when the huge creature descended into a glade in the heart of the forest, just inches above the ground, allowing Fred to let go and land on his feet on solid ground. Chirp stood next to the weasel and pointed into the darkness.

In the moonlight, a medium sized structure could be seen in the center of the clearing, it was a very old cabin, with a collapsed roof and several rotting logs, no glass in the windows or door, only the chimney stood, like a watchtower attentive to everything going on around it. 

The huge monster walked confidently into the cabin and made a soft squeaking sound, signaling his mate to follow him. Fred didn't hesitate for a second and followed the other male's footsteps into the dark house. Lunar light bathed the interior of the cabin like a delicate luminous veil, allowing the weasel to see old dusty furniture and ornaments, destroyed years ago.

At one end of the hut, Fred saw the bat sitting on an old bed, covered with hundreds of wild animal skins. In Chirp's arms was an ancient, dirty teddy bear, being squeezed lovingly and licked by the large predator's long tongue.

The weasel approached his friend and stroked the prized stuffed animal, then smiled and stood watching as the beast swayed gently on his bed.

"You have a very nice home, Chirp," Fred said, enjoying the cuddly image in front of him.

The huge bat let out a delicate squeak and licked his friend's face. Holding back a chuckle, the mustelid climbed onto the pile of fur next to the beast, hugging him and kissing the predator's muscular shoulder again.

The two males stayed together for quite a while, sharing kisses and caresses in silence, until the heat became unbearable and the weasel began to undress. As Fred finished removing his shirt, Chirp licked his neck with his long tongue, making the young mustelid laugh, who hurried to take off his sneakers without even bothering to undo his laces and then yank down his pants and wet underwear.

Chirp let out a soft hiss at the sight of the small mammal's turgid erection, from which clear liquid gushed incessantly, prompting the bat to give it a few licks with his long tongue, allowing him to enjoy his friend's intimate and tasty juice.

"Since you brought me all the way to your house, I'd like us to do something special today," Fred whispered, venturing to fondle the huge hairy balls and sheath between his beloved friend's legs.

The monstrous bat squeaked excitedly, parted his legs to expose his manhood, and stretched out his long arms, unfurling his membranous wings to flap them, careful not to hit his friend, and thrusting his hips into the air, causing his testicles to dance as his long, thin penis slowly awoke and emerged from its sheath, performing a strange mating ritual.

Fred bit his lips and, with a nimble hop, sat down between the huge beast's legs, tilting back his ass until he could feel his lover's thin, warm penis. The weasel spat on his palm and brought it to his ass, plunging his fingers into his anus to moisten it as much as possible before offering his virginity. Then, the mustelid embraced the beast's neck, holding on so that he could carefully descend on Chirp's cock, who patiently waited for the little mammal to do the job at his own pace. He gritted his teeth, grunting and groaning a little, as he struggled to hold back the burning he felt in his loins as he slowly sank the bat's long penis inside him. 

A long sigh of relief escaped Fred's muzzle as he felt Chirp's hairy balls touch his buttocks, indicating that he had succeeded in getting that long, thin rod of flesh into his anus. The monstrous creature squealed in delight, tilting down his head so he could lick his lover's lips as he began to wiggle his hips, starting the copulation between the two males.

The weasel also moved his hips, straightening his back, helping the big beast to make the penetration faster and faster. In one of the wild thrusts, Chirp's penis touched a special spot inside the other male's bowels, causing Fred to draw his head back and let out a high-pitched moan of pleasure. The sound produced by the small mammal invigorated the bat as never before, producing in him the urge to passionately kiss the other male, plunging his long tongue down his throat, and to embrace him with his long arms, covering the weasel with his wings.

The chiropteran's long phallus touched that sensitive spot inside Fred again, followed by a third time, and then a fourth which the young mustelid could not endure so he ended up ejaculating on the beast's abdomen, with a power and volume the weasel had never experienced before.

Chirp continued to frantically penetrate his dear friend, mesmerized by the warm, tight interior of the small mammal and the smell of semen emanating from his own fur, until the young beast could take no more and stopped in his tracks to ejaculate for the first time inside a lover, completely emptying his testicles deep into Fred's bowels.

When it was all over, the mustelid's stomach felt slightly swollen and quite warm, a new and pleasurable sensation that the young man's mind kept trying to analyze without managing to come up with an explanation more complex than 'the best thing that ever happened to me'. The two males remained silent, kissing and enjoying body contact for a long while, as the hulking predator's penis slowly contracted and hid back in its sheath, resulting in a cascade of his own semen gushing from the weasel's reddened and widened anus, bathing his own testicles and moistening his bed.

"Thank you, Chirp. You don't know how much I needed that," Fred whispered, dismounting from between the big bat's legs and stroking his stomach, now almost completely deflated, as he watched his lover also stand up in front of him, again making clear their huge height difference.

The couple kissed again, then the weasel gathered clothes and dressed. While the beast preened, licking his wings, the mustelid came out of the hut to pee. When Fred finished emptying his bladder, he looked up at the sky to find a beautiful starry landscape, adorned by the soft breeze that gently moved the branches of the tall trees that surrounded the glade they were in.

As he made his way back towards the cabin, the little mammal could see a slightly smaller figure, almost his own size, peek through the doorway.

"Fred..." muttered a young bat sheepishly, awkwardly covering his naked body with his hands.