In the past three years, Kahn, who is in his growth period, has undergone very noticeable changes.
First of all, in terms of appearance, Kahn still has short blue hair that just covers his ears. His once-immature face has matured and become more handsome.
The reason why he is described as handsome is because Kahn's figure isn't that of a typical natural destroyer who specializes in physical skills. He looks like a normal person, thin when dressed, but muscular when undressed.
Those who have never seen Kahn in action cannot imagine that such a slim body can unleash strength and be capable of breaking a rib with a single slap from a giant.
In three years, Kahn's height also skyrocketed to 1.95 meters, surpassing Robin.
If Hancock's height hasn't changed in the past three years, then Kahn will regain second place in the family's height ranking.
As for the first place, it must be the upgraded human, Sonia.
In addition to his appearance, Kahn's strength has also seen significant changes.
As a natural destroyer, and at the age of fifteen, even if Kahn overeats like Charlotte Linlin, does no training, and only knows to eat, drink, and play all day long, his strength will still improve steadily.
It wouldn't be until after the age of thirty or forty that the world's top talent would be wasted, leaving him in his seventies and eighties. At that point, it would already be too late to think about cultivation.
Charlotte Linlin is such an existence.
With Charlotte Linlin as a negative example, Kahn certainly won't waste his talent.
For the past three years, he has spent six hours a day practising Haki, three hours practising Taijutsu, and three hours developing his Devil Fruit abilities.
Kahn spends half of each day working on his strength.
As for the remaining half of the time, six hours are spent cultivating relationships with Robin and the girls and getting busy with business when necessary.
The other six hours are spent resting.
Sleeping only six hours a day is a habit of Kahn and Robin, which has not changed over the years.
Under such excellent time management, Kahn's strength, physical development, and his relationship with the girls have all progressed well.
But since he hasn't fought against another superpower yet, Kahn doesn't know what level his current strength has reached.
To be precise, there is still a huge gap between him and those superpowerful individuals standing on the highest mountain in the world and the three big monsters in the New World.
He compares himself to those three monsters, and this shows how much Kahn's strength has improved in the past three years.
"I'm going to pick you up now!"
Kahn, who received Hancock's call, responded immediately.
"Master, your concubine is waiting for you on Kuja's Island."
The Den Den Mushi mimicked Hancock's excited expression again.
In the past three years, Kahn, who was afraid that Hancock would suffer from lovesickness, talked on the phone with Hancock every few days, sometimes even daily, but they hadn't met in person.
Even though he was just talking through a Den Den Mushi, Kahn noticed that Hancock had changed a lot in the past three years.
For example, her self-proclamation changed from "me" to "your concubine."
When talking with Hancock, Kahn would sometimes overhear her conversations with others, and her self-proclaimed status instantly turned into that of mourning, full of majesty.
It was clear that Hancock had adapted to and embraced her identity as the Empress.
Perhaps for this reason, two years ago, Hancock finally awakened the innate aptitude of a king, which is only one in millions of people - Conqueror's Haki.
What's even more outrageous is that in the past three years, Hancock has also mastered the advanced application of Armament Haki, that is, external release and internal destruction.
When Kahn heard this news, his mouth dropped in shock.
He was astounded by Hancock's rapid progress.
In the past three years, Kahn's stamina, skills, Haki capacity, and Devil Fruit development had all made great progress.
The only thing that hadn't progressed was his comprehension of Conqueror's Haki.
Yes, in the past three years, Kahn hadn't mastered the future prediction of Observation Haki, nor the external release and internal destruction of Armament Haki, nor the Conqueror's infusion.
Despite three years of hard work, except for the increased capacity of Haki, there had been no progress in comprehension.
Kahn thought there were only two possibilities: either he had no talent, or like Luffy, he needed to fight evenly with strong opponents or engage in life-and-death battles to rapidly grow his Haki comprehension.
On the other hand, Hancock was an extraordinary talent.
She mastered the two types of Haki at the age of twelve and didn't spend several years as a slave to the Celestial Dragons, unlike in the original story, thus not wasting years of growth.
With Kahn's help, her biological age went directly from twelve to eighteen, greatly increasing her Haki capacity.
Then, with sufficient Haki capacity and three years of polishing, Hancock had a flash of insight and mastered the advanced use of Armament Haki.
People are really incomparable!
When she returns, Kahn must 'ask her for advice.'
After hanging up the phone, Kahn told Robin and Koala the good news. They took their ship and finally left Dressrosa after three years.
Yes, in the past three years, Kahn had hardly left Dressrosa except to find a small uninhabited island and transform it into a base camp.
Even when he left, it was to the sea area not far from Dressrosa to develop the abilities of the 137 kinds of phantom beasts and the form of the dragon.
The same went for Robin and the girls.
In the past three years, Robin had also managed her time well.
She spent six hours a day practising the Haki method of Kuja Pirates and Marine Six Styles, slept for six hours, and spent the remaining twelve hours taking care of Kahn's daily life, cultivating Koala, and negotiating and cooperating with Dressrosa, represented by Scarlett, and the Tontatta Tribe, represented by Mansherry.
Three years later, Robin, who was now 21 years old physically, had lost any immaturity and had become a mature lady with a scholarly temperament.
Under Robin's training, the seven-year-old Koala was just like Robin when she was a child—quiet and precocious.
At the same time, she had also become a Paramecia Millet Millet Fruit user.
As for the two sisters, Scarlett and Viola, and Mansherry, they have often come to Kahn, Robin, and Koala to chat and play over the past three years.
Although they hadn't officially joined, they were already half-members of the "Cross Family."
In the past three years, Kahn had also taught Scarlett and Viola the cultivation methods of Kuja Pirates Haki method and Marine Six Styles.
But Paramecia Love Love Fruit, Kahn hadn't given it to Scarlett yet.
It wasn't that Scarlett hadn't learned enough, but that she hadn't fully committed to the family, and Kahn didn't want to give it to her yet.
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