With a hard swallow, Tanjiro placed his hands over Nezuko's.

"I want…." Tanjiro started.

"Hmm?" Nezuko smirked.

"You as you are. I love you, Nezuko." Tanjiro finally said.

Nezuko's eyes widened a bit, before growing softer as she smiled. She slowly leaned back, sliding her hands out from under his. As she leaned back, the musculature of her body was on full display. The few drops of water left on her stomach glistened in the light. It was obvious to Tanjiro that over the past year or two nezuko had been growing into her full adult body. Her hips were curvy, and her breasts were plump. Not overly, just enough to get a good handful.

Nezuko scooted back on the bed before laying her head back, running her hands up her body, and then letting one leg roll to the side, giving Tanjiro a peek at her goods.

As Tanjiro's eyes traveled down, he could see between her legs. More clearly this time. She had a bit of peach fuzz below her waist, but he could see her lower set of lips. Pure and perfect. Untouched by any man. He almost felt guilty for soiling that beauty.

"Come and get it," Nezuko smirked, beaconing him up onto the bed with her.

Tanjiro instinctually licked his lips before tugging at his towel. Letting it drop to the floor. Nezuko eyed him hungrily, staring at his manhood as it stood proudly between his thighs. She bit her lip in anticipation as Tanjiro crawled up onto the bed, taking his position hovering over her.

She looked up at Tanjiro and was surprised by what she saw. It wasn't the hungry lust in his eye that she had expected. It was softer, gentler than that. She could feel the warmth in his eyes, the love.

Before she could react he slowly closed his eyes, puckered his lips, and lowered his head towards her. Nezuko had no option but to kiss him back. She closed her eyes as well just before their lips met.

It was different this time. It wasn't a brief, fleeting moment of passion like it was in the tub. It was more deliberate. It felt more like a soft caress, than anything else. Her attention was taken elsewhere as she felt one of Tanjiro's strong hands run up her thigh. She felt his fingertips graze her stomach as they came up and planted themselves on her breast. A moment later, Tanjiro broke the kiss, raising his head a bit before speaking.

"I want to enjoy tonight, for both of us to enjoy it. Enjoy each other…" Tanjiro said before he lowered his body slightly and dipping his head again, his lips latching onto Nezuko's other breast. His lips wrapped around her nipple and began to suckle and lick at it. Nezuko could quickly feel the bud become hard in his mouth. At the same time, Tanjiro's hand squeezed and gently massaged her other breast, the fingers kneading the flesh and getting that nipple erect as well.

Nezuko wiggled her legs, gripping them together as her sex throbbed. Her knees grazed against something. Something hard and burning with heat. She glanced down and saw her brother's member. Throbbing, begging for attention while he worked on her. She did what little she could to ease his burden, she moved her leg up gently and rubbed it. Any friction at that point was good. Nezuko could feel Tanjiro slow down slightly as she stroked him as if distracted.

"Nezuko…" Tanjiro said, lifting his head, releasing the saliva-coated nipple. Tanjiro looked Nezuko in the eye, asking for her permission. She simply smiled and nodded.

Tanjiro pushed himself into a kneeling position before slipping a hand under each of Nezuko's knees. The webbing on his hands was placed between her thighs and forelegs. With next to no resistance he spread her legs wide open in front of him. The low light enough to illuminate her glistening lips. She was more than ready.

As Tanjiro scooted up into position, his member grazed her stomach. The tip just under her belly button. Nezuko watched nervously. As Tanjiro let go of one of her legs and gripped himself, lining himself up with her.

Holding himself steady he began to press the head against her. She could feel the immense force trying to burst its way inside her. A sensation she had never felt before. She gritted her teeth as her lips slowly parted.

Her natural lubrication was very much needed. After some poking and prodding, the head slipped in. Tanjiro gasped as he was engulfed by her velvety soft folds. He slowly pushed his hips forward, sinking deeper into her blissful embrace.

Nezuko squeaked with pain as he finally nestled down, hilted inside of her. She could feel him twitch and throb. It was so hot, deep inside. A place she didn't know she could feel. The sensation was a mix of pain and pleasure. The stretching was painful, but the feeling of being filled was divine.

"I'm going to start moving now," Tanjiro warned after a moment of letting her get used to the feeling and letting the pain start to subside.

With a couple of careful movements, Tanjiro began to move back and forth, sliding in and out of his beloved little sister. Nezuko squeaked in discomfort now and then, but it seemed she was getting used to it. Once he was confident, he wasn't going to hurt her, he began to alter his speed and power. Thrusting it harder and faster.

It felt so good. SHE felt so good, it was hard to control himself.

Very quickly the sound of wet slapping flesh was emanating throughout the room, and probably through the walls and floor as well.

He found a rhythm and stuck to it, a moderate pace he could keep up for a while without rest. Nezuko held Tanjiro's hands through the lovemaking, giving him even more leverage for his thrusts.

After only a short while, Tanjiro could feel it, though. His orgasm building up. He didn't have too much longer until he was going to have to pull out of her velvet vice. The mere thought was enough to drag his mood down. He decided to make the most of it, increasing his speed, and power. He positioned himself differently and began to slam into Nezuko harder, faster.

Tanjiro's head sank, resting on Nezuko's shoulder. She quickly wound her hands up through his hair, holding him close and in place.

As his pounding was coming to its head, Nezuko's orgasm was building as well. Almost there, just one last little push to top it off.

'Inside." Nezuko whispered into Tanjiro's ear.

She felt him turn his head, questioningly. As if he didn't hear her right.

"Do it inside me!" Nezuko hissed. As she said this, Nezuko's legs wrapped around Tanjiro and locked behind his back.

With no way to effectively pull out, and the notion of stopping was completely out the window, Tanjiro had no choice but to give her what she wanted. With one final thrust, he smashed their pelvises together. He felt his balls tighten as his dick spasmed deep inside her. Firing off several rounds of semen.

Nezuko reveled in the feeling. The molten hot seed being pumped directly into her womb was the last push needed to send her over the top and cascade into her orgasm. She gripped him like a vice clamp, both inside and out, biting her lip and curling her toes as her muscles convulsed. After a full minute of holding Tanjiro in place, she felt him slip out of her, his erection fully faded. She finally released him, letting him roll over to the other side of the bed.

They were both exhausted, covered in sweat and other juices. They needed another bath and a change of sheets. But that would have to wait until the morning. For now, it was best to just cuddle, and let sleep take them.

"I love you…" Tanjiro whispered as he pulled Nezuko close, draping his larger body over her.

Nezuko looked up at him, weary-eyed, still within a moderate-high of orgasm before smiling and saying.

"I love you, too. Tanjiro."