6 months

Logan starts doing his body training with Bobby and Sunny. Before doing anything in paradise he needs strength so that he can survive here.

Logan plans to first increase his strength and then find someone to teach him haki. He starts training with Bobby and Sunny.

He also starts understanding the underground network present in Sabaody Archipelago. Like this, he spends 6 months training and increasing his strength.

In 6 month time, Logan trained his body from fat to a decent level. He now has strength same as a normal adult. For 15 year body, this is the best he can train without any advanced training.

During these 6 months, Logan kept his ears open for any news related to war contestants but he did not find anything about them. 6 month time was sufficient for Logan to adapt to one piece world.

These 6 months are peaceful for Logan. Although the Grand line is dangerous and many pirates fight here and there but most of them fight on a less numbered island. Nobody was crazy enough to fight in the Last 10 islands which on the front only have hotels but behind these are Underworld. Nobody wants to offend the underworld without any benefit.

Logan only trains and understands the underworld network working. During these 6 months many time, he also meets Disco. Disco is a greedy and bad nature salve trader who can do anything for money. He does not care much about Logan's life. He only gives some money to him that is all he does as his father.

Although not much but Logan is still thankful to Disco for his money. He will try to repay Disco in future. With all the time and money, Logan spend in the last 6 months he is at a Normal adult strength level which is not sufficient to survive in paradise.

Logan cannot overload his still developing body so he stops training his muscles. He now needs to learn techniques to increase his strength.

Currently, Logan is reading the daily newspapers' paradise edition. There he read about many heroic deeds of the 1st warlord In the Arabasta. Logan thinks to himself.

'Crocodile has started doing many things during this period even Baroque organisation has been more active lately I think during this period Robin will join Crocodile.'

Thinking of Robin Logan shakes his head. He wants to get Robin but he knows that If he influences any of the main crew members of Luffy then other contestants will find him. Although smart Robin's character is still hard to handle at present time. He is not a Strawhats who fights against the world government for someone who betrays their crew.

He wants to make things work with side characters to interact very less with straw hats.

Logan then read the newspaper edition of New World. War in the new world has reached its peak.

Even the navy now started to actively capture many of the defeated pirate groups. If thing remains the same as canon then Shanks will become 4 the Emperor in the next 6 months.

Logan finish reading the new paper and called Bobby to the side and ask.

"What happened to the task which I put on the underworld task list."

Bobby reply.

"Master your unofficial bounty on Vander Decken IX has been completed."

"Good, now assign this task and put out all the money which we save in the last 6 months as a reward. Do put this task confidentially so no one can find that it was you who do that."

"Ok master" Saying that Bobby went out.

Logan and Sunny get up and start moving around Sabaody Archipelago. Logan chose Sabaody Archipelago to reincarnate because 3 reasons.

1. There are many organisations he can join. Like navy, underworld etc. Through them, he can increase his strength without gathering any attention.

2. Many strong people settle or always visit Sabaody Archipelago. He intended to convince any of them to teach him.

3. One of the 3 ancient weapons is 10,000 meters under the Sabaody Archipelago. The good thing about this is that at this time nobody knows anything about this weapon. He always plans to control the Mermaid Princess.

Because of all these 3 reasons, Logan selects Sabaody Archipelago as his starting point. He is aware that there may be other war contests present at Sabaody Archipelago that's why he is using the underworld network to remain anonymous.

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Not sure how it is going but I like your comment on these three reasons for Logan.

And support my original.