Just Butler Things. (Reader x Ciel x Sebastian)

"...After all, I am one hell of a butler~"
Sebastian stopped short outside the study where he had left the young master. He had been out attending to some business for his master. Blinking once, then again, he finally regained his senses and turned the door knob where his hand had frozen. He first zoned in on the figure in a black outfit uncomfortably familiar to his. The sleeves looked too big and the coat flopped over the much smaller body, though the ensemble was complete, down to the white gloves and everything. The figure then proceeded to produce a pocket watch quite like his and opened it to check the time.
"Tut tut, young master. If you don't hurry up with your snack, we'll be late for your other appointments."

Other appointments? As far as he knew, the Phantomhive Earl had a free day that day. And he knew everything...well close enough. And he did not 'tut' when he talked! Who was this imbec-

"(Name)! Will you cease this foolishness at once!" A slightly high-pitched voice screeched from...somewhere in the room. That was definitely his master's voice but where was he?
"But young master-"
"And stop acting like Sebastian! It's unnerving." 'Well, that's comforting to hear.' The butler thought.
He then proceeded to make his presence known as he walked into the room with his master's new cane. Scanning the room, he only saw you but not his master, yet he knew he was there. How odd. What was even odder was the 'snack' that you had been referring to. He only saw a small slightly charred pond fish on a saucer. Clearly your work.

"Sebastian! What are you gawking at?"
"I do apologize young master. Except that I'm not quite sure where you are."
"Ah!" You took that moment to speak up. Pushing the overly large sleeves from your wrists, you reached into the Earl's chair and picked up a small...blue-haired kitten?
"Isn't he adorable? Last time I followed you guys to that creepy laughing Undertaker person, I found this on one of his shelves. And you guys were so rude ignoring me while I was a guest there so I picked it out of boredom!" You unveiled a small vial about half full with a clear liquid. "And I wasn't going to test it out on me so I figured Ciel-chan here-" A low growl sounded from your hands "-would do me the honors! And well, apparently it turns you into a cat! Pretty cool, huh?"
You finally finished your spiel, subconsciously petting behind Ciel's ears.

When the black-clad butler offered no response, you finally looked up from the tiny feline who was desperately struggling to escape your grasp.
"Sebastian?"
"The young master..."
"Yeah?"
"He... is perfect!" A breeze in your hair alerted you to sudden rapid movement near you. Noting the lack of mass in your hand, you wiggled your fingers just to be sure. Almost mechanically your head rotated to where Sebastian had mysteriously appeared across from you, cuddling a horror-stricken Ciel.
"Fur...such soft luxurious fur. Noble fur. Pure breed fur. And these paws. The claws are almost as if manicured. But the eyes. Perfect. They draw you into the darkness lurking in the depth of the soul. And the voice-"
"What. Are you doing." Came a snarl from the little ball of fur.
"...we could work on the voice. Perhaps mute it." An evil gleam flashed through his red eyes for a moment to which the kitten shrunk back from the embrace.

"Sebastian you animal! Give him to me! You're scaring him!" You reached out to grab him and managed to snag his tail while Sebastian held on to the rest of him, eliciting quite the sharp squeal from poor Ciel.
"No, Miss (Name). I assure you, he's as safe as can be with me."
"Give him!"
"He's perfectly fine!"
"I want him!"
In the tug-of-Ciel that had ensued, the poor neko had decided that the 'help' you two were offering was something that he would do without. He turned and lashing out with his claws, nearly scratched Sebastian and you if you hadn't let go of him. Scampering between your legs, he dashed out of the room and kept running until he disappeared around the corner.

"This is your fault!" You cried at Sebastian who regarded you rather calmly for someone who had just lost his little master.
"How long does it last?"
"Eh? Oh well, I put in his tea a few moments after you'd left. It's been about an hour or two since."
"Ah..." He appeared thoughtful for a few moments. "Remind me to get some more when we visit the Undertaker once more." A sinister grin painted his face.
Perhaps you'd be a bit more cautious with your drinks when that happened.

"...By the way, why are you wearing my uniform?"
Your face lit up as you laughed nervously.
"I...I wanted to try out your catchphrase..."
"Catchphrase?"
"Y'know, the whole 'hell of a butler' thing?" He stifled a laugh at that.
"And you had to be dressed up?"
"I'm one hell of a cosplayer." He wasn't sure how to react to that...or what the hell a 'cosplayer' was.

                                                                         ~About a Half Hour Later~

"SEBASTIAN! COME GET ME OUT OF HERE!"
The demon butler rose from his seat in the study and smirked as he walked out to the trees surrounding the Phantomhive manor.
"Oh? Young Master, how ever did you get up there?" He closed his eyes and smiled almost innocently. "Instinct perhaps?"
He could feel the glare from the smaller male currently entangled in the branches of the tree, once more in his human form.

Sebastian decided that he really liked it when you were around...
"Meow! Sebastian help me!"
"Yo! Sebastian what's happening?"
"I can't find my glasses, mew!"
He looked back to see three small very familiar kittens running towards him with you cackling from the safety of the manor.

Sometimes. He liked it when you were around sometimes.