Marineford Headquarters.
A huge fortress that looks like a mountain and have two huge doors with the kanji for Justice painted on the outer gate and walls. The space in front of the is big enough hold 100,000 marines and all of the Whitebeard's pirate like shown in the Paramount War. There are battleships lined up in the bay of Marine ford. Each of the battleship is as big as a building some of them each bigger.
There was an old man sitting doing paperwork wearing a seagull hat. From a civilian perspective it would look like funny or even silly but from a marine perspective, they would be in awe and worship this person. Another person was sitting there with black hair with a little bitt of gray hair on the side. He was munching on a packet of cookie crackers loudly while laughing at the old man with seagull hat. This person while looking old is someone who also can evoke admiration and respect from marines due to his efforts albeit a little less also due to some off his foolishness.
The men sitting are the current Fleet Admiral Sengoku with the moniker of "Golden Buddha" due to his appearance and power when using his devil fruit known as Hito Hito no Mi, Model: Daibutsu.(Human Human Fruit, Model: Buddha). The other one is known as Vice-Admiral Garp with the monikers of " Hero of Navy, Garp the Fist and Devil." He is known as this because of him cornering The Pirate King, Gol D Roger and fighting the Rock Pirates along with the 3 current pirate emperors and their captain Rocks D Xebec.
Both of them were talking with Sengoku trying to choke Garp as usual when a marine came bursting through startling Garp and Sengoku.
Marine:" Fleet Admiral Sengoku and Vice-Admiral Garp, Instructor Z sent a report of his chase on the Devil Pirates with the recruits."
Sengoku grabs the report and dismisses the marine from his office. Garp gets interested when he sees Sengoku eye's gleam and starting to laugh in excitement.
Garp:" What is the exciting news Sengoku, don't be stingy and share with me as well."
Sengoku:" Look for yourself my friend, Z got a little monster to join the marines."
Sengoku hands the report to Garp and calls for Admiral Sakazuki, Kuzan and Vice Admiral Tsuru to come to his office. Garp almost chokes on his crackers as he looks through his report and almost can't believe it. Someone who could use 2 haki to a good level but also possess a undocumented logia type fruit which is on par with the Pika Pika no mi, Magu Magu no mi and Goro Goro no mi. . He also could injure Z a bit and is said to be only 15 years old with no teacher to teach him. He also took a 150 million berry crew by himself with a few seconds. The one word Garp could think at that moment is monster. Granted Sakazuki was stronger than him when he and Kizaru joined but they were older by at least a decade. He is a good seedling that has the chance of becoming a yonko if he went to become a pirate. Good thing Z recruited him before that disaster could happen.
Timeskip after an hour
Sakazuki, Tsuru, Garp and Kuzan are all gathered in Sengoku's office since he wanted to show them a report on what Z brought. They were surprised and happy even if not all of them showed it. If this kid is nurtured correctly, he has the chance of becoming the strongest Marine ever. That kid would be strong enough to match a yonko making them have a easier time pushing back the four yonkos and keeping them in line.
Tsuru:" This kid is quite strong, where did Z find him and do we have anything on him."
Sengoku sighs and this is where he is happy a bit.
Sengoku:" Z told me he found him on an island where they chased the Devil pirates and took care of the pirates since they were annoying him as he stated. We also have no records of him meaning he is not a criminal or bounty hunter."
Sakazuki:" What rank are you going to give him, he is far stronger than many marine's here. Can't put him in the recruit due to his strength or sent him to hell island."
Sengoku:" Z said that kid is strong enough to be a marine headquarter rear-admiral so we were thinking of putting a show with him fighting the strongest rear-admiral we have to see where he stands."
Kuzan:" Don't you think it is too much, he is to young, what if he fails then."
Garp:" Don't worry too much Kuzan, Z is not a fool if he says he is strong as a rear-admiral, then we believe him."
Tsuru:" Where is Z anyway."
Garp:" He should be arriving today if I am not wrong."
Sengoku:" So are we all agreement, we should have him fight rear-admiral and if he wins, then a fight a middle ranking vice-admiral."
All of them were in agreement even though Kuzan has some problems with it.
Timeskip to the Wolf
Wolf gets off the battleship as he looks around Marineford which shows authority marines possess on the sea of One Piece. Z smirks and tells him about Marineford while taking him to Fleet Admiral Sengoku's office. Many of the surrounding marines are surprised and curious about the young man walking behind Instructor Z looking bored even though inside he is a bit interested. Z knocks on the door and Sengoku allows them come in.
Sengoku:" Welcome back Z, I heard you had a fruitful trip."
Z:" Yeah, Sengoku this Wolf and vice versa."
Sengoku:" Nice to meet you young man." in a grandfatherly tone.
Wolf:" Nice to meet you, Fleet Admiral Sengoku."
Sengoku:" You have such good manners unlike some of the other marines."
Cue the sneezing of Garp, Sakazuki, Kuzan and Kizaru.
Sengoku:" Oh also due to the fact of you being so strong, to rank you we are going to have you go against a rear-admiral and if you win then you go against vice-admiral. Do you have any questions."
Wolf:" How do I get earn the ability to learn the Six Styles of Marines."
Sengoku and Z are visibly surprised but compose themselves.
Sengoku:" To earn how to use Rokushiki, you must earn military merits which can get from arresting pirates and protecting kingdoms under the World Government Banner."
Wolf:" When I can go on the sea, can I leave by myself."
Sengoku:" If you show power beyond Rear-Admiral then you may leave alone. By the way, why leave alone not with a marine crew."
Wolf:" I am better doing things by myself. They will die if I use my more heavy attacks and I want to use this chance as a way to train."
Sengoku:" Very well, If you do go out to train and get military merits, then you must not betray the marines and keep a snail on you so we can contact and record your movements."
Wolf is annoyed by them recording his movements but he know this is required and it is temporary.
Wolf:" Ok, I will do as you please. When will I fight."
Z tries to tell him but Sengoku comes in interrupting him.
Sengoku:" You will be fighting in 2 days, your opponent's name will told in person when you fight them."
Wolf:" Very well, Have someone grab me when it is my turn, I am going to explore Marineford."
Wolf walks out to explore Marineford maybe find a place to eat. He did not see Z staring angrily at Sengoku, nope he definitely did not see him do it. Wolf was walking around the place as 5 marines who look like lieutenant rank block his path. They look at wolf with sneer and superior attitude.
Marine:" Watch where you are going kid."
Wolf said nothing to them as he continued to stare at the idiots. The marines took this action as Wolf" quivering in fear."
Marine:" Serves you right kid, we are of the lieutenant rank of the marines so if you want for us to forgive you beg on your feet and says sorry."
The marine then start howling in laughter. This attracted the attention of a girl with pink hair and a black hair girl wearing glasses looking at Wolf with pity since they could not help him out. The marines blocking his path are corrupt but they are ranked higher than them. They are just simple recruits who are not even elite ones trained by one previous admiral " Black Arm" Zephyr. It was every marine's dream to be trained by him because he trained the 2 of the 3 current admirals.
Wolf harshly says:" Get out of my way." Then he starts releasing his conqueror's haki making the men slump down unconscious and putting everyone on their knees either foaming from their mouths or looking at him in terror. Wolf glances at the men and then at the 2 girls, then starts walking away. The girls slowly looked up at him in fear and amazement as someone close their age was strong enough.
Timeskip after 4 hours
Wolf had a exciting day since he got to meet multiple people from the one piece story like Hina, Tashigi, Garp and Sengoku. In 2 days he will be fighting a rear and vice admiral. Wolf really wanted to win against them so he is going to pull out the big guns. At the competition, he will be showing his true power and that will be his stepping stone towards his legend. He will beat everyone in his way and show his strength. I am going to come for you Pirate Emperors.