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Black butler x fem!mermaid!reader
w/c: 2280 c/w: none, fluff A/N: the dialog comes from the manga of Black Butler so I'm not sure how different it is from the anime since it's been many years since I watched it, so i guess I could say spoiler warning I guess (แตโแดโ). Also this was a request from @eprhyra0cloud so enjoy (หถแต แต แตหถ)
"Are you sure you are fine, Tanaka?" (Y/n) pushed his chair along the hall of the Royal London Hospital.
"Yes, (Y/n). Don't worry about meโ Ahโฆ Aah!!!"
"Tanaka!" (Y/n) quickly rounded the wheelchair and kneeled next to him as he fell down on the floor. Following his arm she was shocked when she saw one of the phantomhive kids run up to them.
"Grandpa?! Sister?!"
"Young Masterโฆ Young Master!!!"
"Young Master!!"
(Y/n) watched as Tanka and the young master hug each other before taking a glance at the tall black haired man standing in the back. Raising an eye brow at him, questioning who he was, she only received an infuriating mysterious smile which irked her. Ignoring him for now she focused on the boy and returned his hug when he went and clung on her, not wanting to let go.
"I'm glad you are okโฆ" (Y/n) buried her face in his hair and stood up with him in her arms as the nurses helped Tanaka back into his chair. Sebastian took it as a sign and pushed the wheelchair as they walked to his patient room.
(Y/n) quietly brushed his hair to the side as she looked at him with a soft smile. "I'm glad you are alive." Cupping his cheek, he gave her a watery smile and hid his face in her neck.
_________
"โฆI see. So you both didn't see the culprit either."
"Yesโฆ I am sorry, I couldn't protect your father." Tanaka apologized as he sat on the patient bed, his wound from the burning house were worse than (Y/n) so it was decided that he would stay at the hospital until he recovered so the hospital could monitor his wounds. Meanwhile, (Y/n) sat on the edge of the bed and listened mostly, her wounds were more minor since she was taking her rounds on the lower floor when the fire happened while Tanaka was further in the mansion. They both barely made it out while searching for anyone of the family to safe.
While Tanaka spoke, (Y/n) gave fleeting looks to the new butler who was standing behind Ciel. She new who he was and why Ciel's eye was bandaged but kept quiet. It's not like she was in a better situation.
"Please take this." Tanaka handed over a pocket watch.
"What is it?"
"It's been passed down from every Phantomhive butler to the next. Mr. Sebastian. I don't know who you are or where you are from, but pleaseโฆ" he kneeled down on the bed. "Please take care of the young master"
"โฆYes. As a butler, I will do my best to serve the young master properly." Sebastian showed his polite smile as he carefully enclosed his hand around the watch before pocketing it in his coat.
"Since I can leave the hospital already, I would like to work again for you, young master." (Y/n) bowed a little as she was in her civilian clothes.
"I'll be in you care again, (Y/n)." Ciel smiled as he tighten his hand around hers, which he hadn't let go since they entered the room.
After departing with Tanaka and (Y/n) promising that she will come by, they made a brief stop at Doctor Durless office, Ciel's aunt. After she fretted over him and handing him a ring, the three of them entered the carriage and departed for the Phantomhive Manor.
"It will not be in the best shape." (Y/n) explained.
"But it's still standing?"
"โฆYes, as far as I have seen last time, it is. But I don't know the intensity of the burn or how long it would take for it to be rebuild and liveable." She lightly brushed his hair with her fingers to make it less messy.
Meanwhile, Sebastian watched their interaction quietly from the other side. "Not such a disagreeable boy when he's with her I see." he quietly smiles until they arrive at their destination.
Standing in front of the burned manor, Ciel couldn't believe his eyes, he already knew that it would be burned but not like this.
"This is quite bad." Sebastiand stated blankly.
Dazzed he walks away and towards the cementary that was near their place.
"Young Master?"
(Y/n) simply follows him as he leaves, leaving a confused and slightly miffed. (Y/n) stayed with Ciel as he griefed at his families tombstones, kneeling with him and placing a hand on his shoulder as he cried. He sniffed a few more times before turning and hugging (Y/n).
"Young Master." Ciel tensed up and looked over her shoulder to see Sebastian calling out. "The sun is setting. The night wind is not good for your health."
Standing up, he brushed off his pants. "There are pubs and inns offering lodging in this area, we can stay thereโฆ"
"Actuallyโฆ That is not needed."
"?" both Ciel and (Y/n) were a little confused and followed him back.
"No wayโฆ"
"โฆThat.." (Y/n) astounded and in disbelief she threw the demon a scrutinzing gaze, narrowing her eyes at him as he focuses his attention on their young master.
"Didn't I promise you? I don't tell lies."
"ThisโฆThis is.." Sebastian lead Ciel by his hand and towards the front door.
"How could I be the butler of an earl if I couldn't even do this? And as an earl, you are supposed to live in a beautiful mansion." Throwing open the door he turned back to the two. "Starting from today, this is your manor."
Not believing that everything was standing again, he walked back into the halls that once burned with anger and engulfed everything he knew.
"Welcome back. My master."
"You should tone it down." (Y/n) whispered to him as she passed by.
"I don't know what you mean." he simply smiled as they followed Ciel up the stairs. Sighing (Y/n) could already feel the headache that was forming.
"IT'S TOO HOT!!!"
"Sebastian! Whatโ" (Y/n) dropped the towels she was bringing in and ran over to them.
"You can't just pour all the boiling water in at once! Check the temperature!!" Ciel shouted at his new butler as (Y/n) arrived next to Sebastians side and glanced over at Ciel, making sure he didn't get burned.
"I am sorry. I'll be more careful next time." he apolgised before muttering to himself "So this is too hotโฆ" (Y/n) gave him a look of disbelief as she heard it and sighed. But she couldn't intervene and only help as Sebastian needed to learn how to do this, she couldn't really take over or explain it to him.
"He's a demon, of course he wouldn't know these thingsโฆ Let's hope the young master survives this until he learned everythingโฆ" (Y/n) stood at the side and watched with heavy heart.
"That's it. Don't touch me! I'm getting out!!" Ciel moved away from the assault of scrubbing and a look full of fear.
"What are you saying? You're still dirty. I can't risk having you die suddenly because your wounds suppurate." Sebastian frowns lightly as he lectures Ciel.
"Tsk." Ciel Splashes his new butler full of water and send him out shouting. Feeling like she should help, (Y/n) intervenes.
"โฆHow about I take overโฆ"
Swallowing his pride, Sebastian bows and leaves. "โฆYes, sir."
"Let's clean those wounds at least, yes? And than you can get out." (Y/n) tried to bargain and Ciel reluctantly nods. Folding up her sleeves she carefully and gently washes his wounds around his body clean and hums a low melody.
Ciel relaxes slowly as he listens, absentmindly he traces the small gliterring scales on (Y/n) arms that appear from the water. He had known that she was a mermaid for a long time even before the manor burned down. She had always taken care of him so he was bound to know of it. (Y/n) didn't mind and let him trace them a while longer before she helped him out of the water and start bundling him up in a big towel.
Meanwhile, Sebastian runs his fingers through his wet hair cursing at his new master "That bratโฆ"
After some time, Sebastian went back in and sees (Y/n) drying Ciel with a big towel. Her movement gentle and careful to not irritate anymore of the wounds than they already are. As he walked closer he saw Ciel pouting as he let her dry him. Seeing him (Y/n) gestures for him to take over so she could bring some clothes for him to change into.
The moment Sebastian took the towel from her hands, Ciel resisted.
"Don't touch me!"
Fully annoyed Sebastian grabs his face. "You're being a little too stubborn. Humans are weak animals that can die easily just by bacteria entering their bodies from even the smalles of wounds. You're a child that cannoth even treat his own injuries properly, don't make me waste my time."
Stunned, Ciel keeps quiet and pouts, letting Sebastians finish drying him. After changing they all walked down to the dining area. Sebastian helped him to his seat before he let his meal appear, literally. With a fly of a cloth, the whole table was filled with different kinds of meals, ingredients being pulled out of thin air.
"!?"
"Please help yourself." He was listing every kinds of dish as he walked down the table with a plate, ready to bring him anything he wanted. (Y/n) stood on the side impressed and doubtful as she tended to the evening tea that would help Ciel to relax before bed.
"โฆSebastian."
"Yes?"
"Don't you ever do such thing again."
"Why?"
"Normal butlers can't rebuild a house in one night or cook a dinner in the blink of an eye. If someone sees you they'll get suspicious."
"How troublesome. But I understand." Placing the filled plate down, Ciel grabs towards the fork and takes a bite. Anticiapting what reaction he will have (Y/n) held out a glass of water for him.
"UhโฆBleh!!" quickly grabbing the glass, he downed it in one to get rid of the horrendous taste in his mouth.
"Oh, didn't it please you?"
"It's gresy, spicyโฆ and saltyโฆ"
"I seeโฆ I guess this menu is a little heavy for you, since you've been in that palce all this time. I'll make some Risotto right aโโฆ"
"Enough, I'm going to sleep."
As Ciel leaves the room, (Y/n) moves to clear the table. "I don't think that is the reasonโฆ" She shoots him a look, picking up one of the meat and tasting it before grabbing a glass herself. "It's not made correctlyโฆ and simply tastes bad if you want to hear it bluntly." She briefly closes her eyes to ban the taste from her mind, sighing in disapointement and despair at what she has to work with.
"And what would you know, fish." Sebastian's eyes glow faintly as he looks at her.
"More than you do, bird." She smirks as she kept her back turned to him and continued to clear the table. "Go warm up some milk and take honey with you for the young master." She ordered, not carring for his expression or attitude.
It was already late when she finished up in the kitchen and sampled the dishes to see which could still be saved for the next day before she retired for the night.
Later that night, she was flipping through the notebook Tanaka had given her, wearing her night gown. Looking at the glock she decided to walk up to the young master and see if he was sleeping. She picked up the candle that was sitting on her night stand and wrapped a shawl around her before walking up the steps to the upper floor. Getting closer to Ciel's hall she glanced lightly at Sebastian as she passed but ultimately ignored him.
Knocking lightly she excused herself and opened the door when she heard nothing. Walking closer to the bed she saw that he was tossing and turning. Sitting down next to him, she ran her hand through his hair and whispered his name to wake him up.
Waking up with a gasp he moved away as his eyes darted around in the room before they landed on her. Calming down a little he frowned.
"What are you doing here?"
"I was seeing if you were alright. It is the first night back here after all."
(Y/n) already knew about the seal as she had seen it in the bathroom. Well, Ciel himself didn't care covering it in front of her either.
"You saw. You can go now."
"Are you sure?"
(Y/n) patiently waited as she watched him try to make his decision until he gave up and slipped back down under the covers. "Fine, stay. But don't touch me."
"Of course. Do you want me to sing?" (Y/n) would never sing without his permission or when she deamed it necessary so she would always ask before she sung for him, that's what she had promised Rachel after all.
"โฆYesโฆ please."
Smiling softly at him, (Y/n) started with a hum before swtiching to a soft and melodic song. Ciel watched her for some time before his eyes slowly closed as he felt warmth spread around him and his muslce relax. Burying himself deeper into the blanket he listened attentivley to her singing before a softer and kinder dream captured him.
She stayed a little longer and lured him to sleep for a while until she was sure he was in dreamland before quietly walking out of the room.
















