1st Year
Sherlock Holmes kept a little notebook filled with letters for John, of conversations he wanted to have with him and words he could not tell him, he was reckless and wrote in it every time with out fail.
On his first birthday as a dead, he wrote about the solar system and the tale of Orihime-sama and Hikoboshi-sama and likened in to the them both sans the meeting, but he held hope that one day once everything is done they would meet and stay together for a long time.
On his first christmas without John, Sherlock wrote christmas carols and bought a present for John, a pocket watch that he kept in his coat at all times. He slept with his notebook clutched to his chest that night, thinking that it was John beside him.
2nd Year
In his second year, he was still reckless and wrote letters and anecdotes in a new little notebook. Mycroft had told him that John had been awake since his 'death' and is doing kept writing that night that he had not notice the fire until it reached the pocket watch.
On his second birthday as a dead, he wrote about the binary system and thought about how it described him, Mycroft sent him John's gift that was left in his tombstone. His smile reached his eyes and in return he sent the pocket watch to Mycroft to be given on John's birthday. The scarf kept him warm at all times.
On his second christmas without John, He went back to London to finish off the sniper assigned to Mrs. Hudson, he left immediately but not before seeing John's message
I BELIEVE IN SHERLOCK HOLMES
He left London with a sad smile but joyful eyes.
3rd Year
In his third year, he had learned to calm down and be disciplined, no longer did he act recklessly but he still wrote. Everyday, every night and every time he killed someone he would write. If only to lessen his guilt as he was reaching his limits. He has learned that he could not always depend on John, there are somethings that he must face by himself but these unsent letters are the only ones he have. And so he'll keep on writing.
On his third birthday, He learned about tarot cards and thought how he was The Fool and The Strength represented John. Mycroft called to tell him that Nero was sighted in Paris.
On his third christmas, He met Nero who was kind enough to help him out when he was in a pinch in India. They kept on meeting since then, Nero's eyes reminded him of John's.
At new year's eve he learned that John had disappeared without a trace and Blanca Valmont had been declared dead.
4th Year
By the fourth year, he had seen every miserable thing in the world and only had Nero for company. He still wrote letters to John, in hopes that it would reach him. He had forgotten what John's smell was and his voice. The only thing he remembers is John's warmth and the love they shared.
On his fourth birthday he bought paper lanterns and let it float towards the vast Pacific Ocean in the Philippines while he paid his respects to Blanca, he learned that his distant cousin was Blanca's lover. He thought about how small the world was.
On his fourth christmas, he received a gift from Nero and the two celebrated it silently. He was nearing the end, with only two persons left.
On new year's eve he killed the last sniper and learned that Nero was connected to the web. His tears were salty.
5th Year
In the fifth year, he returned to London in 221 B in an empty dusty flat that had too much of John's memory but too little of John himself, he fainted on his bed and woke up the next day seeing the clues that John had left. He still had one final game to play.
On his first birthday since his return, he found himself back in London after traversing the whole world. Through all of it he saw John's letters each replying to his very own notebook at the same time telling him stories of how he became part of the web. He does not realize that it ties in with Nero.
A few weeks before christmas he received a challenge letter from Nero,traveling in back in Paris he noticed that Blanca's hotel had been torn down and what replaced it was the former house before it. Sherlock did not know what to feel or what to think when everything seemed to be happening to finish a story he had long thought was done.