Disclaimer: I do not own sherlock or Cage of Eden.

A/N: Cage of Eden is a manga by Yoshinobu Yamada that gave me my idea to write this story. My story, A Case in Japan, does not follow the plot/events/story/characters of Gage of Eden so it is not a crossover and you don't need to read it to understand my story. Also, in case you don't/didn't know, a manga is a Japanese graphic novel normally read from right to left. Story takes place after The Great Game but before A Scandal in Belgravia.

Warning: Omegaverse, Mpreg, female(alphas) being able to impregnate others, sexual content, super minor character death(s), AU, more warnings could be added in future.

July 10, 2010

Sherlock, John, Mycroft, Greg, Anthea, Molly, Sally, Philip, Martha Hudson, Jim Moriarty, Sebastian Moran, Irene Adler, Kate Adler and about 300 other people were on an airplane headed towards Japan. Why is everyone on a plane to Japan? It all started a few days ago.

July 5, 2010

Mycroft was in 221B's living room having a heated discussion with Sherlock.

"Sherlock! Stop being such a child! All I ask of you is that you go to Ja-"

"Japan! Mycroft, you want to send me off to Japan because of a problem the prime minister is having! That is your job, not mine."

"Yes, it is my job, which is why I'll also be going, but you must understand that there is a substantial amount of... legwork... to be done, that will be your job. You know how much I detest legwork."

"Right! You think I'll go to Japan because of legwork! Not the best negotiation technique you've ever tried on me. Pathetic, in my opinion."

"I think you'll go to Japan for the two weeks vacation I'm offering."

"Offering vacation to someone who lives and breathes The Work is also immensely stupid of you."

"Fine. Two weeks of unlimited access to all of Tokyo's most gruesome murder cases, in exchange you will solve the prime minister's case."

"Agreed. John, Lestrade, Molly and Mrs. Hudson will be coming as well, of course." Mycroft looked extremely confused at this statement.

"I can understand why John would need to come, I also have a minor understanding of why DI Lestrade needs to be there, but why in the world will Mrs. Hudson and Ms. Hooper be coming along?" Sherlock shrugged.

"You said 'two weeks vacation', if anyone is in need of a vacation it's Mrs. Hudson, and, since your in such a giving mood, why not invite Molly to this little party of ours?" There was a slight pause.

"Very well, but only if Philip Anderson and Sally Donovan come as well." Sherlock narrowed his eyes at this.

"Why? You've never even met them!"

"No, but you can't take without giving something in return Sherlock, it's called a compromise. Mrs. Hudson and Ms. Hooper's comfort in exchange for yours, deal?"

"Deal." Sherlock agreed with a very annoyed look on his face. Soon Mycroft left and one John Watson came up the stairs.

"I passed Mycroft on the way up, he got a case for us?"

"Yup! Pack for a two week trip John, we're going to Japan!"

"Wait, what!?"

July 5, 2010

Knock knock

"Yes yes, hold your horses, I'm coming. Oh! John dear, what a pleasant surprise! Come in, come in, I just put the kettle on."

"Thank you Mrs. Hudson, but I just came to tell you that Sherlock was offered a case in Japan and-"

"Oh that's lovely, a friend of mine went to Japan once, she said that it's the most beautiful in spring. How long do you think you'll you be gone, do you know?"

"Yes, two weeks, but-"

"Two weeks! That's an awfully long time to be gone, John!"

John, now a bit exasperated, spoke his next word a bit louder. Not so loud it's rude, but loud enough to let Mrs. Hudson know what he had to say was important.

"As I was saying, would you like to come Mrs. Hudson? Sherlock said that because Mycroft is paying we should make a holiday of it."

"Really? Oh, I'd be delighted. I'll start packing right away, goodbye, John."

"Bye Mrs. Hudson"

July 5, 2010

Ring Ring

Greg was at his desk, wondering who could be calling during his six o'clock break, his only break all day, before answering the phone.

"Detective Inspector Lestrade."

"Greg, it's John, how do you fancy a vacation?"

"I would love one. Why? Are you offering to take me on holiday, John?"

"Yup, Sherlock got a case in Japan-"

"A vacation from Sherlock is nice, but you know it doesn't count as a real vacation, right?"

"Ha ha, very funny! You, Sally and Anderson are invited to come along."

"Seriously?"

"Yup, so start packing. Don't forget to tell Sally and Anderson."

July 5, 2010

"Molly Hooper, you have just won a two week vacation to Japan, all expenses paid... Sorry, just having a bit of fun, it's John. Anyway, Sherlock's brother, Mycroft, needs a job done in Japan and he told Sherlock it was fine if he invited a few friend and you are one of those friends. Make sure you pack whenever you get home and are ready to go in five days."

July 6, 2010

Just a few miles from 221B a certain consulting criminal was in his own home, getting a certain bit information from his informant.

"Hello Sebby, what do you have for me? You said it was important when we talked yesterday on the phone, and, for your own safety, you better hope I find it important."

Sebastian Moran knew only information about Sherlock was considered important to Jim.

"Yesterday at 1800 hours (6pm) Mycroft Holmes bought tickets for a flight to Japan that leaves July 10 at 1300 hours (1pm)."

"Oh, what do I care what the Ice Man is doing, he's so boring, please tell me that is not your 'important information' Sebby."

"It's not, the fact that one of the tickets is in the name of Sherlock Holmes, is."

Jim Moriarty suddenly looked ecstatic.

"Call Irene. Tell her and her omega, Kate, that we're all going on a trip this weekend. Our destination? Japan!"

July 6, 2010

Kate new better than to interrupt her mistress when she was with a client unless it was life or death, so when Irene heard a knock on the door, she paled. She excused herself from her client before opening the door and taking Kate somewhere safe to talk.

"What's the matter Kate? What happened?"

"Sebastian called, he said that we should pack because we are to accompany Jim on his trip to Japan. Do you think it has something to do with our last client?"

"No, Jim's unpredictable and a liar, but if he wanted to harm us he would tell us, he thinks it's more fun that way. Looks like we're going to Japan, Kate."

A/N: Please tell me what you think so far! I know it seems weird, but I just wanted a reasonable explanation for why all (most) of Sherlock's characters are together for what I have planned for chapter three.