Notes:
As of time of posting, the endings are still a work in progress, when they are done, I will update them accordingly.
The three endings are all based on Nezuko's ability to change size. One will be 'normal' Nezuko, one will be smol (loli) Nezuko, and one will be big, muscular Nezuko. Depending on which size you pick for the ending, the scene will play out differently.
The dirt road was dry and rough, full of uneven soil and holes, but it was well-traveled. There was no way to get lost. The Sun drifted low in the sky, It would be night soon. Tanjiro knew he needed to get seek refuge for the night. As he walked, slowly panting, pain ached throughout his entire body. Behind him, a small trail of blood drops dotted the path.
Not an hour before he was attacked, ambushed by a demon in broad daylight. They always held a parasol over them to keep themselves in the shade, but despite that handicap, they nearly got the better of him. In the end, though he was able to slash their protection and send them fleeing into the forest. He knew if he didn't find shelter soon he would be back to finish the job.
As he trudged along the path, he finally saw something that swelled his heart with hope and relief. A small inn on the side of the road, its lanterns freshly lit and glowing, a beacon to weary travelers. Quickening his step as much as he could, he made his way to the door. He reached the entrance just as the last specks of sunlight faded behind the mountains.
He slid open the door and stepped inside. He took a quick look around and found himself in a small family area, there was a fireplace with some furniture around it, with a desk off to the side. Behind which sat an old woman. As his gaze fixated on her, he saw her confusion and fear.
"Oh, my!" The old woman stood up. "What happened to you?"
Tanjiro looked down at his clothes. The green and black pattern was now streaked with dark crimson. He could feel the dried blood on his forehead and down his cheek as well.
"Sorry, I got into a fight. I was hoping I could sleep here for the night?" Tanjiro asked, he was hoping she would let him, despite how he looked.
"Hmm… You look like you have had a rough day, let's get you a room where you can take a bath, some clothes, and a nice meal." The old woman said, stepping towards him. Her eyes shifted from his battered face to his sword.
"Thank you." Tanjiro sighed.
The old woman grabbed a key from the desk before she led him to a set of stairs. They walked up together and to the first door on the right in a hallway lined with doors. She opened the door and walked in, quickly lighting the small table-side lantern in the room, illuminating it. There was only a single bed, some light furniture such as a dresser and chair in the corner of the room.
"Go ahead and clean up." the old woman said, gesturing to a door on the wall across from the chair. "When you are ready, come downstairs and I will make you some dinner. Oh, and bring those filthy clothes down as well, we can clean those before you leave in the morning."
She walked into the room and opened a drawer, inside were some simple clothes, much larger than what Tanjiro needed, but they would do for the night.
"Thank you, miss," Tanjiro said. The old woman smiled and nodded before closing the door behind her as she left.
With a sigh, Tanjiro set Nezuko's box down. His eyes gazed over the bed. Looks like they would be sharing tonight. He tapped it lightly on the box.
"Nezuko, are you awake? You can come out now." There was no response.
"Must be asleep still," Tanjiro said before he headed to the washroom door. He opened it to find what he expected, a bath with an assortment of soaps and brushes, along with towels for afterward.
Closing the door behind him, he filled the bath with hot water before disrobing, discarding his blood-stained clothes in a pile. Slowly, he slid down in the water, his body ached, but he knew this would make him feel better. He sat there, for a time. The water turned a light shade of red as he cleaned himself of the dried blood.
He sat back and soaked, letting his muscles relax a bit, he tilted his head back, the water was making him drowsy. He could easily fall asleep. Then suddenly, he heard the door to the washroom slide open. His eyes snapped open and he quickly tilted his head towards the door.
At the doorway, he found his little sister, Nezuko. She was peering into the room. Tanjiro let out a sigh of relief and relaxed back into the tub.
"Oh, it's just you. Give me a minute, Nezuko, then you can have the bath if you want." Tanjiro said. Shutting his eyes again.
There was silence for a moment before he heard the door shut. But then there was another noise. The sound of fabrics being rubbed against one another. Tanjiro's brow furrowed before he opened his eyes again in the direction of this new sound.
Nezuko had stepped in and shut the door behind her. She was currently disrobing, pulling at the sashes that kept her kimono fitted together.
"Nezuko, what are you…" Tanjiro started.
Before he could finish his sentence, the tension in the belt was released, and the dress fell open. Tanjiro could see her slim pale body barely covered by the dress as it hung loosely over her frame. Her breasts were only partially covered, but the strip of flesh from the middle of her chest straight to the ground was exposed. Tanjiro's eyes took it all in in an instant before he could react to avert his gaze.
Looking away, his cheeks growing rosy, he couldn't get the image he just saw for a half-second out of his mind. He had looked, if only for a moment. Between her legs. She wasn't wearing underwear. He could still see the soft mound of flesh, the image burned into his mind. Unable to force his mind to stop thinking about it at this moment, his body started to react against his own will.
Some footsteps came close, In another moment he heard her dip a leg into the water before plunging herself in. He wasn't looking out of decency, but he could feel her, in the tub with him now, only about a foot away from him. He interwound his legs, covering his sprouting shame before slowly peeking over at his sister.
She was sitting in the bath, her arms gripping the rim of the tub, she seemed happy. The water level was up to her shoulders. However, through the slightly tinted water, Tanjiro could still make out the distinct shape, and color of her nipples. He looked for only a moment before looking away again.
"Nezuko… I said you could have it to yourself in a minute…" Tanjiro said.
Nezuko made a happy grunt into her bamboo gag.
Tanjiro's eyes flitted back over to her. Her silky black hair was partially submerged in the water, floating on the surface like some kind of lily pad. His gaze focused on Nezuko's face. Her skin was perfect, as always, and her eyes were so full of… something. That something that had spurned Tanjiro on for so long now. It was like some cocktail of emotions that ever drove him forward.
He remembered back when he was training for over a year, there were plenty of times he wanted to give up, but the simple memory of Nezuko's cheerful loving eyes was enough to push him on. It was as if just by a glance, Nezuko could instill in him every good emotion that existed.
"Hmm?" Nezuko hummed.
Tanjiro was snapped back to the present. Nezuko had noticed him staring, and had tilted her head questioningly. She slowly moved forward in the tub, gliding through the water over to Tanjiro. He scooted away slightly. Nezuko reached out of the tub and picked something up off the floor. She held it up for Tanjiro to see. A bar of soap.
"O-Oh, haha. Yeah, I guess that's what I should have been doing all along, huh?" Tanjiro said, sighing.
Nezuko scooted close to Tanjiro, She twirled her fingers at him, instructing him to turn around. Tanjiro did as he was told and turned his back to his sister. He felt her tenderly grab his hand under the water and pull it up. He could feel her soft fingertips slowly caress down his arm, examining the cuts that lingered from today's fight.
Nezuko brought the soap up to his shoulder and started to scrub, lathering up his arm with suds in no time. She then ran the bar across his back and down the other arm. She was extra delicate around his injuries. As she finished his back, Tanjiro was about to turn around, to take the soap and do his front when he felt a weight against his back. Soft and wet, Nezuko mashed her body against his, her slender arms wrapping around him. In one hand she still held the soap and continued to lather the upper part of his chest.
Tanjiro was a bit shocked, he hadn't anticipated something like this. And turned his head towards Nezuko, who only smiled at him through her gag. He wasn't sure if she realized what she was doing. With her pressed against him like this, wet, and naked. He could feel just how soft and smooth her skin was. He could feel the semi-erect buds on her chest grinding against his back. Again, Tanjiro's body reacted, his shame growing ever harder to conceal.
After a few moments, she relented and pulled herself back. Tanjiro turned to face her and she held the bar out to him, dropping it in his hand before turning around herself. Tanjiro shakily took the bar and began to work it against her back. He only did the bare minimum before pulling back. Nezuko looked back at him, a little dissatisfied before leaning over the tub again and pulling up a different bottle.
She handed the bottle to Tanjiro. He looked it over and read the label: 'shampoo'. Nezuko again turned her back to Tanjiro, expectantly. Tanjiro opened the bottle and got some of the shampoo on his hands, lathering it up slightly before beginning to work it into Nezuko's thick dark hair.
This too brought back memories. Of years ago, when they were little, and bathed together as kids. Just like now, he would help her with her long, flowing hair. But it was different now, she was no longer just his little sister. Nezuko was blossoming into a beautiful young woman, and he couldn't help but notice.
He massaged her scalp as he ran his fingers through her hair, making sure to not tug or be too rough. Nezuko hummed happily at the treatment. As Tanjiro worked down the back of her neck, he revealed the strap to her gag. A thought occurred to him.
"Nezuko…?" Tanjiro asked.
"Hmm?" Nezuko looked back at him.
"Do you want me to remove this?" Tanjiro asked, gripping the tether on the gag.
Nezuko thought for a moment before nodding. Without hesitation, Tanjiro tugged on the cord, releasing the knot and letting the gag fall from her mouth. He pulled it away and set it down on a nearby towel. Nezuko moved her jaw around a bit as if stretching.
"Thank you." She whispered.
Nezuko then dipped her head under the water, running her hands through her hair to get all the suds out. When she resurfaced she wiped the hair out of her face and looked at Tanjiro.
"I'm sorry…. About today." Nezuko whispered.
"What do you mean?" Tanjiro asked.
"I couldn't help you fight. And you got hurt because of it." Nezuko said, reaching a hand out and gently placing it a few inches below a cut on his arm.
"Heh. Well, I managed. There was nothing that could be done to change it, anyway. That demon today was something special. However, we will have to be on the lookout tomorrow, if he can attack during the day, then even traveling with the sun high in the sky isn't safe anymore…" Tanjiro frowned.
Nezuko looked down at the water, a tad discouraged. She scooted closer before wrapping her arms around Tanjiro's neck, pulling him in for a hug.
"I'm sorry. You have done so much for me, and I have no way to repay you." Nezuko whispered in his ear.
Tanjiro was a little shocked, but he slowly embraced her, hugging her back.
"It's what any brother would do…" Tanjiro answered back.
Nezuko shook her head before saying, "Not everyone would train so hard for so long, and constantly put themselves in danger for my sake."
Nezuko pulled back, looking into her brother's face. Their eyes mere inches apart. After a moment of silence, gazing into one another's eyes, Tanjiro spoke up.
"I love you, Nezuko…"
Nezuko's eyes widened a bit before her expression softened and she smiled. Her eyes began to slide closed as she leaned forward, puckering her lips. Tanjiro realized what was happening, but he was frozen. He knew he should move, stop her, to let this happen was wrong. Despite what his rational brain was telling him, deep down, he wanted this. All he had to do was let it connect. So, he closed his eyes.
The first thing he felt was her hot breath glancing against his skin. Then, after a moment, the feather-soft touch of her lips met his. It was only a peck, at first. And then another, and another. On the fourth kiss, Tanjiro pushed back. After a tiny bit of time spent getting used to this, they then began to intermingle their tongues, exploring each other's mouths, and wrestling for dominance.
During their first make-out session, Nezuko flipped around her body in the tub to be more directly in front of Tanjiro instead of at his side. In doing so, she flipped a leg up and over him, ending up straddling him. As she was still enthralled with the kiss, she instinctively moved her body close to him. That is when she felt something hard grind between her legs.
"Mmh!" Tanjiro moaned.
Surprised, Nezuko's eyes popped open as she broke the kiss, a small trail of saliva still connecting the siblings. She pulled away slightly and looked down at the space between their bodies.
Tanjiro opened his eyes as the kiss broke and followed Nezuko's gaze.
"S-sorry." He said, blushing.
"I see, so this is my fault, too?" Nezuko asked, looking back up at Tanjiro.
He didn't know how to respond. If he was being honest, of course, she was to blame. There is no way anyone could keep from getting excited when put in the situation he was in. But he couldn't say that.
As he fumbled with his words, Nezuko smiled and shook her head.
"Come on, Let's get out of the bath, the water is getting cool," Nezuko said, before dismounting him and standing up. Tanjiro watched her, his eyes fixated on how the rivulets of water ran down her curves.
Nezuko stepped out of the tub and grabbed a towel before quickly drying off. And wrapping her hair up in the same towel. She walked out of the bathroom with just a single look back and a grin.
With the door shut behind her, Tanjiro sighed and stood up himself. He drained the tub and grabbed his towel, drying off slowly intentionally. Letting himself calm down before he went back into the bedroom. He wrapped the towel around his waist and made his way out the door.
Back in the bedroom, he found the lantern still lit, illuminating the room in a soft yellow glow. Nezuko's box was where he left it, only now the door was open. There was a wet towel laying on the floor next to the bed. Finally, laying on top of the bed itself was Nezuko, laying on her side, facing the bathroom door. Still completely nude.
He stopped as he opened the door. He expected her to at least be in clothes by now. But it looked more like she was waiting on him.
Nezuko waved him over to the bed, as she sat up. Tanjiro took a couple of steps towards her tentatively. He could see her flesh was still damp from the bath, she hadn't dried off completely, her skin was still glistening in the light from the lantern. She wore a hungry smile on her face as he got into arm's reach of her.
"I thought of a way to thank you," Nezuko said as she reached out and hooked three fingers under the towel at Tanjiro's waist. She tugged at it, pulling Tanjiro closer.
"You do so much for me, so much work, so much fighting, it's all so stressful. The least I can do for you is help you relax when you finally get the time." Nezuko continued. She released her grip on his towel and brought both hands up to his stomach, she lightly clawed his flesh while looking up at him.
Tanjiro didn't answer immediately. He was stunned by the turn of events. He thought that what happened in the bath was a mistake and would be something they were going to pretend never happened. He didn't expect her to lean into it like this.
Regardless of one's morals or sensibilities, when you have a naked young woman, looking at you so ravenously, Your body is going to respond whether you want it to or not. He could feel a rush of blood between his legs as he started to form a noticeable bulge in his towel.
Nezuko's eyes flickered over to it before her smile widened.
"So, what would you like me to do for you?" Nezuko asked.