Mello was looking for a pet. Not just any pet, but an exotic one. Near had somehow managed to smuggle a polar bear into the country and Mello wanted to finally beat Near at something. He needed something so fucking spectacular that even Near would have to admit it was. He had done a google search on Matt's laptop (which he stole) and had found a shop in Chinatown that looked like the perfect place to get just the sort of pet Mello was looking for. He took a plane there and walked to the shop. When Mello walked in the door, the smell of incense hit him. A man that Mello assumed was the owner was sitting at a table in the shop eating some cake. The man was wearing a silk robe and had an extremely beautiful and delicate face.
"Hello, welcome to my shop. We have just about every kind of pet you could ever imagine. What kind are you interested in?"
"Something that's better than a fucking polar bear."
"Well, I think I know the perfect thing. But first, would you care to join me for some tea?"
"Do you have anything with chocolate?"
"I have chocolate cake."
"Ok." The two of them got into a long talk. Mello ranted to the man about his rivalry with Near. The man listened and then told him that his name was D and talked for a while about various bizarre animals and how magnificent they were. Mello found him extremely interesting. He found himself drawn to D. but, eventually D had to get around to showing Mello an insanely awesome pet, so he led Mello to the back room and unlocked a door. Mello was shocked to find a boy that looked exactly like him in the room that D had just led him to.
"This is a doppelganger." D explained "it can take on the shape and personality of whoever it wants to"
"This is awesome!" said Mello.
"Of course I'm fucking awesome!" said the doppelganger "better than that bastard Near. Both of us are."
"Damn right we are! D, I'll take him!" said Mello. D smiled and pulled a piece of paper out of his pocket.
"Good! I'm glad to see you two get along. Now, just sight this contract and you can take him home. The contract has three rules. One, don't let anyone see him."
"That's easy. I can still find some other evidence of his existence to show Near."
"Two, only let him eat food that you would eat yourself. Three, don't kill yourself."
"Well, that sounds easy." Mello signed the contract.
"Before you go," said D, blushing "could I maybe…see you again sometime?"
"Yes, I would like that very much." said Mello "is a date ok?"