New Hope, New Beginnings

I claim my OCs as mine and this AU. Depending wether is of the likes of the fellow readers, it will contain more chapters.

He ran quickly, doing his best to keep up with his baby sister on his back, despite he being just a five year old. The beast snarling after him, he was told by his mother to escape, take the baby of the family, the second child. His mother being pregnant with his third younger sibling. The little boy didn't even want to begin wondering if his mom was going to make it to safety, he was tired and scared.

Until tripping on a tree root, he yelped and held his baby sister close, shaking as the beast was now so close to them. He knew, even at his young age, that this was the end of them, he just curled and let out final tears, wailing his apologies of failure to his sweet mother. Until he heard a quick blur and a slash. Looking up, he could only see a big man, holding a sword and the beast's head falling apart and starting to fade. He sniffled, holding unto his sister.

"Are you hurt?" The guy asked him calmly, his eyes serious and his posture calm. Emiting a passive aura, no hostility or harshness, just some mild worry. He was worried about these two children.

"It hurst..." the little boy replied, he had his foot bleeding, no doubt a spraining ankle.

The guy cleaned the blood off his sword and sheathed it, walking a few steps in front of the child and kneeling. "I'll take you home with me. You and your sister." He spoke with softness.

"W-wait, I need to go to Mama," the boy replied. The guy swallowed hard. "Your mother did not make it," he didn't have the heart to crush a child's heart, but he didn't want to lie to him, it would be worse.

The boy widened his dark eyes, more tears forming. The other tall guy flinched, he prepared himself for what was coming. The boy immediately burst into tears, his mother, dead. His father already was dead, but his mother and unborn sibling gone, it crushed him. A small child couldn't understand well a situation like this.

"Mama!" he cried, hiccuping and sobbing so harshly. The guy didn't waste time, he picked both the crying boy and his snoozing infant sister. He caressed his unruly, curly hair.

"It will be alright. I promise. It is all terrible right now, but I will make your life better." He soothed the child, best he could. He knew how to comfort a crying child, probably had one of his own.

"Mamaaaaa..." The boy, held from the guy's mismatched haori, sobbing in his shoulder.

"Shhh. Soothe yourself, it's okay. It's alright, it'll be alright." The guy himself felt horrible, two children this young, one looking like five and the other close to a year, their mother dead, he could also tell, when he saw her, was pregnant. What a tragedy. It took a long while, but the boy calmed himself to gentle sobbing.

"There we go. I am so sorry, boy. If I made it in time, then your mother wouldn't had had gone through this. But it's impossible to go back in time." He spoke softly, patting the boy's back.

"What's your name?"

"K-Kamado T-Tanjirou..." He sniffled up.

"Tomioka Giyuu."

"T-Tomioka-san..."

"I'll protect you, Tanjirou. You and your sister..."

"Nezuko,"

"You and Nezuko. Under my wing, it's a promise." Giyuu made his promise to both children. "Come, I believe it'll be best to burry your mother, and make a small prayer.

He carried both kids over to small house that once was Tanjirou and Nezuko's home. He set them down and carried the dead mother gently, bowing his head in respect. Tanjirou helped with digging a hole on the ground to bury his mother, new sobs escaping him. Giyuu buried the woman and put some flowers there. He, and Tanjirou joined hands and made a small prayer. Nezuko was tied around Giyuu's back in a cloth sling, secured and gently swaddled.

After done with the prayer, Giyuu stood straight and nodded at Tanjirou. "Let's go. I have a daughter, around your age, if anything a bit older than you. I'm sure you'll be good friends." Though, the initial thought, was as siblings. Giyuu was planning to take in these children as his own, he had to. He couldn't leave them to their luck or to some jerk human that would hurt them. He knew that there were people like that. He was a Pillar, so he could protect them.

"Papa, Papa!" Giyuu smiled softly, seeing his little daughter rushing over. "Okaeri!" She welcomed him.

"Hello, little raindrop." He patted her head, showing her his smile he had just for her. When she noticed, the sniffling boy in her father's arms and the baby on his back, she tilted her head. "Papa, who are they?" She asked, not signaling, since it was taught to her it was not nice and impolite.

"Mizu, these are Kamado Tanjirou and Nezuko. From now on, they're family. Your siblings." Tanjirou was shocked when he heard the revelation, he had new family, lost one and got a new one the same time, he felt crying really. He whimpered and hid his face in Giyuu's shoulder. The Water Pillar frowned worriedly and sadly, patting his back. "They lost their Mama, to one of those beasts I have told you to beware of."

Mizu got a hand to her mouth and small tears trickled from her blue eyes. "That's...that's horrible, Papa..." She felt it. Giyuu shook his head and with his free arm brought his daughter closer to him. "I know it is, and we have to help them feel secure again. Can you be a nice sister to them, Mizu-chan?"

"I promise, Tanjirou-kun and Nezuko-chan will have a protective home and feel welcomed." Mizu didn't waste time to say what was in her mind. She always had wanted siblings to play with. She was waiting the time when her mother and father decided it was time to make the family bigger. So having adopted siblings would do it for now.

"That's my little raindrop. I am so proud of you." Giyuu smiled at his daughter and her sweetness. He was glad it wouldn't bring trouble, in first place he believed that Mizu would get all jealous and would treat the two siblings with hostility, but that thought now vanished. His little girl was caring and sweet, he was enchanted and happy with it.

"Now, I have to tend to Tanjirou's ankle, can you watch Nezuko for a moment?"

"Sure, Papa!"

Giyuu untied the sling from his back and gently set the sleeping baby girl on a futon, tucking her in, letting Mizu watch her while he walked to his room with Tanjirou and set him down. "Now, show me, where does it hurt."

Tanjirou pointed to his ankle and Giyuu gently took it, massaging it and cleaning it to prevent infections.

"Ow!" Tanjirou cried out, it hurt him. Giyuu quickly reset it and bandaged it.

"It's all done, Tanjirou." He patted his head to calm the little boy's whimpering. He now had to tell his wife, Akira about this new addition, he was sure his wife would not have a problem with the children after she explained her what happened with them.

"Anata, are you home?" Akira, who was coming asked. Giyuu smiled and picked Tanjirou. Now it was a perfect time to present the children to her.

"Akira, okaeri." He smiled at her and leaned a bit to kiss her lips. Akira warmly smiled and looked at Tanjirou with curious eyes.

"Akira, this is Tanjirou. Saved him from a demon who massacred his family..." Akira looked hurt and horrified, the poor boy. "I took him in and his sister, I couldn't really leave them like this in the open."

Akira took Tanjirou in arms, soothingly hugging him, the boy didn't seem upset and just hugged into her, feeling exhausted. The redheaded woman was saddened by this poor boy's family's fate, she was hoping to be a good surrogated mother to him, like Giyuu already was being a good father. They were parents of a daughter after all, they knew how to handle children.

"Does Mizu already know about this?"

"Yes. She was pretty fine with it. She's a really sweet, little raindrop." Giyuu fondly expressed himself of his daughter. Akira smiled lovingly. She had the best caring husband.

Giyuu then walked his wife over to meet Nezuko, Mizu was looking after her with a fond smile, the baby girl sleeping soundly in her small kimono shirt and cloth diaper. "This is Nezuko."

"Ah, Mama!" Mizu smiled and hugged onto her mother's leg and Akira smiled softly at her daughter, patting her head and poking her face. "Papa brought new siblings to me! I like being a nee-san!" Both Giyuu and Akira chuckled at their daughter's cheefulness of becoming a big sister. Nezuko whimpered and started to wake, her eyes examining her new surroundings and the new people in there. She got so scared she began crying, when Giyuu crouched down and scooped her up in his arms.

"Ne, ne. It's okay, Nezuko-chan. I know everything seems so confusing for your little mind to process, but everything will be alright." Giyuu snuggled her and pressed a kiss to her head, bouncing her lightly. Nezuko slowly calmed down and cooed softly, snuggling into Giyuu, having a bit of trust now to the man, he was warm and caring. The baby trusted him now. Giyuu rocked her gently in his arms, humming to her that famous Tomioka lullabye which was sang from generation to generation. First to him by Tsutako, then him to Mizu when she was a baby, and now Nezuko.

Mizu smiled, she loved that lullabye so much, she hummed along side her father, wanting to also soothe Nezuko. Tanjirou in his exhaustion from running a lot, ended falling asleep in Akira's warm arms as the woman also lightly rocked him.

"We should lay them down to nap for a little. They went through a lot today." Giyuu suggested they did that and Akira nodded, the two Kamado siblings were placed down in the same futon, by one another's side. Nezuko whimpered a few as Giyuu slowly and gently patted her stomach and out of instinct, Tanjirou held her tiny hand. Nezuko calmed as soon as her brother held her hand.

"They're adorable, anata." Akira said warmly, resting her head on Giyuu's shoulder and he rested his ontop of hers, watching fondly at both sleeping children. Mizu slowly scooted over in between her parents and whined.

"Hey, don't forget about me!" She squeaked, causing Giyuu to let out a small laugh and he quickly lifted her up.

"Ah, how could I forget about my little raindrop?!" He blew raspberries in her tummy and she exploded into a giggling fit. "Guru guru guru!"

"Ack Papa! Hahahaha!" She squealed and giggled, squirming around in her father's grip, Akira laughed kindly and joined in, tickling her daughter's little feet. They had a loving time just the three, while the other two children peacefully snooze away.

Everything seem perfect again for Tanjirou and Nezuko, this was a loving home.

I will explain a few things. Giyuu's married here with a daughter, and adopts Tanjirou and Nezuko. This is an AU, will have a few canon things, but it's mostly AU-wise.

I hope you like this. Tell me in the reviews(If you review of course that is :)) if you want me to continue this. Thanks for your time!