"Zenitsu, taking your medicine really will help. Then you can get back to training as soon as possible!" Tanjiro encouraged. "YOU REALLY THINK I WOULD WANT TO GO BACK AND TRAIN!? IM GONNA DIE!" Zenitsu shreaked.

Suddenly, a door slowly opened to reveal the tiny girl Tanjiro once saw before, her hair now in a long, high pony, some strands falling out. The girl was smaller than her age, so she had to use the tips of her toes to reach. Behind her was Aoi, one of the nurses in the Butterfly Mansion.

"M..Medicine?" You asked, holding up a cup of purple liquid for one of the boys to take. You went over to the yellow haired boy and nudged him to take the drink.

Zenitsu looked at you and thought you were the cutest kid he's ever seen. If anything, He didn't want to throw a fit about the meds and make you feel bad, so he just took it. "Y-Y-YUCK!" Zenitsu yelped.

Aoi patted her head. "Good job Y/N-Sama." She praised as the girl walked off.

"Sama? Aoi-san, what do you mean?" Tanjiro inquired, confused about Aoi giving a small child such a high honorific tittle. Aoi looked back at the door you exited from before answering.

"She's a Hashira. One of the strongest, too." Aoi answered, smiling softly, but with a hint of sadness. She continued, "It is truly sad how that's the case. Her life was stolen from her."

Tanjiro looked at the door you exited from with sorrow. Zenitsu on the other hand exploded.

"WHAT!? YOU'RE TELLING ME THAT CUTE LITTLE KID IS A HASHIRA!? YOU HAVE TO BE LYING!!!" Zenitsu yelled, flailing his arms and legs around.

"ZABATSA SHUT UP" Inosuke yelled out, scaring Zenitsu more.

If there was any weakness the tiny girl had, it was that she was terrible with navigation. She easily gets lost in the Slayer HQ and the other Hashira's mansions. Because of this, it was decided that it would be in her best interest to not live in her own Mansion, so she stays with any of the hasiras whenever she feels like it.

The small child, now lost in the long hallways, sneezes.

Due to her using ice breathing with such a small body, her body temperature was always very cold. That's why when she fights seriously, she ends up with a terrible cold.

Rengoku appeared around the corner of the hallways to find Y/N.

"Y/N, you have a mission and Uzui is free, so he will join you, I'll escort you to him!" He beamed, then heard you sneeze once more. He picked you up and walked outside the butterfly estate.

Rengoku knew the child had struggles with the cold, and so since he radiated warmth due to his flame breathing, he volunteered to be her personal heater.

—

Tengen loved watching the small child fight.

The way how she could gracefully move and slip through the smallest areas to find an opening was truly a sight.

How she could move so quickly it looked like she had teleported was a mystery to all the Hashira. Even though Tengen could do the same thing, the fact that she was younger and quicker was a mystery to him.

Tengen and Y/N were assigned to a large cave that many slayers had gone missing in, their crows rushing back to the Ubuyashiki estate. The girl had a tendency to get lost, so Tengen stayed close, but did not interfere with her job.

Technically, she was stronger than him, after all.

The way she moved around the room, taking out the 4 demons all at the same time was something to awe at.

For only being accepted into the corps 1 and a half months ago, she was amazing.

When the small child was finished with her work, she put her hands in an 'up' motion, so Tengen picked her up and walked away from the scene and back to the mansion. Her crow landed on her head and chilled out while Tengen held her close as he made his way back, knowing how she would easily get cold often.

When they came back, Tengen set little Y/N down who walked over and gave Sanemi a little hug who picked her up. "You took care of the ugly demons?" Sanemi calmly asked as Y/N nodded and hugged him with a little hum. "Good job" He said. Even though Y/N didn't smile, he could tell the little girl was from her eyes.

————

One time, Sanemi was returning from a small mission when he heard a twig snap. He got in stance ready to attack but he saw a little girl, her hair, face, and clothes were covered in blood. Tears were slowly falling from her eyes, but her face had no emotion. "Yo kid, what are you doing in the middle of the snow. Where's your parents?" "Dead." You blankly stated. "Why you covered in blood? Someone hurt you?" He questioned, and you have a small nod. "Who?" "Papa" you said. "Hurt" then, you pointed to yourself.

"Your dad hurt you?" "Mm" you hummed, showing your arms littered with bandages, scars, and gashes.

"Did you hurt them back?" He asked, having a feeling where the conversation would go. "No. Monster." You said.

'Demon' Sanemi concluded. "Where's your home?" He asked, and you started walking north, so he followed.

Eventually, you both ended up in an old broken down home, the snow outside coated in crimson blood. Sanemi peered inside and saw your father, who was mauled by a demon, and that demon was still in the house. Suddenly, the demon jumped out of the home right pass Sanemi and aimed for you. "I NEED MORE OF YOUR BLOOD" It yelled. Just as it's long nails were a centimeter from your face, you appeared behind the demon. Sanemi quickly cut the demons head and turned to you as it disintegrated. He took notice of how you were faster than the Sound Hashira. "You're a fast shit aren't ya?" He said as you looked at him.

Sanemi was an observant man, surprisingly. He noticed how the demon went right past Sanemi for your blood.

You were just like him. Blood that was irresistible to demons.

Demons craved your blood more than any other, it was irresistible. Yours was even more potent and attractable to demons than Sanemi.

'I can't just leave this kid here.' He sighed. "Is it cool with you if you come with me?" He asked you and you nodded and whispered. "P-pwease. Yes." So you both started to walk towards HQ.

About halfway, you were getting drowsy, and a cut on your forehead has opened up. Before you could pass out, Sanemi had picked you up and you fell asleep.