Notes: This piece takes place after my "An exorcist in a tailcoat" series (may have some references to it).
Also, it is putting Blue Exorcist in the same time period as Black Butler. So all the same things took place in the Blue Exorcist time line, just earlier.
The youngest of the exorcists of the True Cross Order entered the office to find the director waiting with his usual smirk. A small green hamster crawled around the brim of Director Mephisto's hat as he greeted the boy.
"Welcome Yukio," the demon said, reaching a hand up to pluck the rodent off his hat and set him free on his desk as the exorcist came over to him.
"You wanted to see me, sir?" Yukio replied.
"I have a new assignment I want you and your Exwires to look into," he told him, picking up a file off the desk and handing it too him. "There is some demonic activity of interest in London we have been asked to look into," he continued to explain as Yukio opened the folder.
"London? Isn't that a little out of our range sir?" Yukio immediately asked but the director just smirked.
"That branch is busy with another case and requested some assistance. I thought it would be a good opportunity for the Exwires so I took them up on the offer. Now then, notice the records of supernatural activity. What do you see?" Mephisto asked, waiting as he looked over the first few pages.
"It has… gone down? But that doesn't make sense, why does it need investigation if it has gone down sir?" he asked, looking back up.
"Because we do not know why. England is a popular area for demons and we have records of some possibly very powerful ones in fact. The problem is that in the last two years, that activity has gone down and we need to know why. The order suspects another supernatural force in motion, possibly another demon has overthrown the previous one or an unidentified exorcist has taken care of it. Either way, we want to know more."
"Alright, so what do you want us to do? All of London is a bit much don't you think?" Yukio asked him.
"Yes, of course. That is why you will start by going to a party!" the director said with a chuckle, only laughing more as he saw Yukio's face when he said it. "This isn't just any party either! It is the ball of the young Lord Phantomhive! You will be going undercover as lords and ladies to investigate. The ball is sure to attract all kinds of nobles from the London area and we know the Phantomhive family is involved in much of the underworld side of the city, so it is the perfect opportunity find a few clues on suspicious activity."
"And… how long to we have before this event…?" Yukio asked, adjusting his glasses as he tried to comprehend why the director had thought this would be a good task for the Exwires.
"Three days!" Mephisto cheered, then tossed a key to Yukio. "This will lead you to a nearby inn. You will go there tomorrow to be fitted by a tailor and rent a coach for the event. And be sure to give those Exwires a few lessons in proper manners!" he said with a smile.
"Yes sir" Yukio replied, taking the key and the folder and started to walk out.
"Oh, and Yukio, Shura will be joining you on this assignment." Mephisto added, smirking as the exorcist immediately looked irritated.
"Of course, sir." Yukio muttered before walking out.
This was going to be challenging… to say the least.