After obtaining the Op-Op Fruit, Vinsmoke Judge's memories, and scientific research materials, and successfully turning Monet and Sugar into his personal maids, Kahn's trip to North Blue had been highly rewarding.
If nothing unexpected happened, Kahn would leave North Blue this time. Unless he encountered something he didn't understand in scientific research, he wouldn't step into this sea area again.
Returning to the Grandine with several safes, Kahn set sail towards Reverse Mountain.
Yes, Kahn chose not to return to the New World across the Calm Belt.
He had high hopes for Monet and Sugar and wanted them to be his loyal followers.
Kahn intended to strengthen their relationship further before taking them back to the New World to be trained by Robin.
So, Kahn took Monet and Sugar from Reverse Mountain to the first half of the Grand Line, continuing to develop their relationship while heading for Drum Island, the world's tenth-largest medical country.
Along the way, Kahn also stopped at an island on the same route as Drum Island, bought many drinks, and then turned towards Little Garden, reuniting with his "good friends" Dorry and Brogy.
The captains of the "Giant Warrior Pirates" from nearly a hundred years ago were also useful to Kahn.
Although they had been fighting on Little Garden for almost a century, their status in Elbaf hadn't diminished much.
Once they returned to Elbaf, even Prince Loki had to respect them.
As a time traveller, Kahn knew the status and background of the giant race well.
Befriending them could only be beneficial.
After chatting with Dorry and Brogy for a while and giving them all the drinks, Kahn left Little Garden with Monet and Sugar, who were amazed at seeing giants for the first time.
A few days later, the three finally arrived at Drum Island.
Drum Island, also known as Winter Island, was covered in snow all year round.
When Kahn, Monet, and Sugar arrived, it was still snowing heavily.
However, this environment was very beneficial to Kahn.
After taking Monet and Sugar to the most luxurious hotel in the Drum Kingdom, Kahn focused on confirming the location of the doctors while chatting with the two girls.
He planned to wait until after dark to 'visit' these doctors one by one, read their memories, and update his understanding of medicine.
If Kahn could choose between listening to the Voice of All Things and reading people's hearts, he would definitely choose the latter without hesitation.
In Kahn's eyes, listening to the Voice of All Things was not as useful as reading people's hearts.
While the former could hear non-human voices, it couldn't read memories.
Reading people's hearts wasn't just about collecting information.
The most powerful aspect of this ability was stealing others' knowledge by reading their memories.
By digesting all the knowledge in a particular field, one could go from being a layman to an expert in an instant, or at the very least, an elite.
With strong comprehension, one could even become a master in that field soon.
Kahn had already been a master in medicine for a few years, but he wasn't interested in becoming a doctor and passing on the knowledge he stole to Mansherry.
After reading Quinn's memory through Sonia, Kahn became interested in becoming a scientist.
So, after obtaining the Op-Op Fruit, he deliberately searched for "Germa 66" and read Vinsmoke Judge's memory.
In the base camp, there are Paramecia Healing Fruit users, and the strongest Paramecia Op-Op Fruit users in the medical field will soon emerge.
Kahn, possessing both of these medical abilities, naturally wants to update his understanding of medicine.
During his trip to Drum Island, Kahn not only focused on the doctors of the Drum Kingdom but also targeted Dr. Kureha, the witch known for curing incurable diseases.
To be precise, Kahn's trip to Drum Island was specifically to gain Dr. Kureha's knowledge.
At 128 years old, Dr. Kureha was still as energetic as a young person and often indulged in wine. She behaved like a pirate and her strength in her younger days was formidable.
Due to her mysterious nature, Kahn initially avoided targeting Dr. Kureha. But now, in need of better medical knowledge, Kahn couldn't ignore the most powerful doctor in the country.
As night fell, Kahn went into action.
He asked Monet to take care of the sleeping Sugar, donned his black cloak and white mask again, and disappeared from the hotel suite like an afterimage.
On a snowy night, Kahn, like a killer, sneaked into the homes of doctors who were resting after work. He used Conqueror's Haki to stun the doctors and their families.
He then read their memories one by one, checking for important materials in their homes and stealing them if found.
A person's memory is their treasure.
However, important research materials are treasures that cannot be made by one person alone and belong to many people.
For example, Vinsmoke Judge's bloodline factor and human transformation technology were the results of the collective efforts of MADS.
These achievements were shared among all members.
This is why Quinn has Vegapunk's laser technology, Judge's invisibility and floating devices, and why Judge has Quinn's human transformation technology and Vegapunk's cloning technology, among others.
All three of them, even the weakest Caesar Clown, mastered each other's skills.
They all used their wisdom to advance these technologies.
When Kahn fully digests Judge's memory and the scientific research materials from the safes, he will master all the research results of MADS. Whether he can advance them further remains to be seen.
However, it is certain that Kahn will be deeply involved in medicine and science in the future.
After mastering these fields, Kahn is confident he can help himself break through the limits of this world, complete dimensional evolution, and become a powerful being beyond the ceiling.
The power of each world has its own limit.
The person closest to this limit is called the strongest in the world.
For example, in the world of Naruto, before the birth of Six Paths-level powerhouses, the "God of Shinobi" Senju Hashirama was the ceiling.
Six Paths-level powerhouses are beings beyond the ceiling of the world, considered gods outside the earth.
The One Piece world also has its own ceiling.
However, because Kahn travelled before the manga concluded, he doesn't know who represents the ceiling yet.
What is certain is that Kahn will definitely become the ceiling of this world in the future.
However, being the ceiling means being the person closest to the limit.
Kahn's goal is not just to be close to the limit but to become a transcendent being beyond it.
Without the illogical cheats of a system, Kahn can only rely on himself.
----------
You can read advanced chapters here: patreon.com/GregariousLion