The pirates sat and forgot, and they really believed the nine truths and one lie.

Nami, one of the timid trio, has gained new power. Chopper, who is even less courageous than Nami, has become the apple of the eye of two women.

Master Tsunade accepted Kaya as his second disciple and Chopper as his eldest disciple, and tried his best to take care of Usopp's sweetheart, never expecting that one day he would have a younger apprentice sister.

Kaya's living environment suddenly changed, and she gradually came out of her fear and decadence. People cannot live in the past forever. She knew that she had to look forward and did not want to be a burden to Usopp.

The girl knew how Usopp's mother died. Usopp's biological father did not fulfill his duties as a husband and father, so Usopp could only watch his mother die of illness on the bed.

But Usopp did not resent his father. Usopp wanted to be a pirate like his father. He played pirate house games with his friends on land since he was a child, and dreamed of becoming a captain one day.

Usopp got his wish and left with Luffy. This long-nosed guy would never come back until he achieved his dream, just like his father.

Kaya, who has been weak and sickly since childhood, studied medicine because she wanted to cure her illness. Now that she is alone, Kaya wants to study medicine even more, hoping to help Usopp in the future and keep the prodigal son by her side.

Tsunade is also very satisfied with the qualifications of her second apprentice. Although he looks weak, he is actually strong in his bones. He has a certain foundation in pharmacology and can understand a lot of knowledge quickly. However, his talent is not as strong as Chopper.

Chopper is a genius who can make Rumble Balls. Don’t be fooled by his cute appearance. Tsunade often holds her eldest disciple in her arms and rubs him. She is very grateful to Big Bear for sending her such a good disciple.

Chopper studied pharmacology with Tsunade, and was even able to apply what he learned to other situations. Strange formulas would often pop up in his mind. This powerful pharmacological talent amazed his teacher.

Tsunade believes that sooner or later, Chopper will become as Tianmu said, a famous doctor, and completely surpass her master, the strange doctor.

Studying pharmacology is just the beginning of the preliminary courses. Tsunade wants to teach her two apprentices some real skills. The woman and the deer never expected that the strange doctor teacher is actually a master of ninjutsu.

Strictly speaking, her original medical ninjutsu can establish a new school of medicine. Many difficult and complicated diseases that cannot be cured can be cured through medical ninjutsu.

Kaya has another reason to like medical ninjutsu very much. Reaching a high level can keep a woman young. Master Tsunade now looks only in her thirties.

The real age of the strange doctor has at least doubled. The aging of women in the pirate world is extremely abnormal. Not only do they become uglier and older, but their height also shrinks abnormally.

Being able to stay young, maintain the vitality of the body, and change the disease-prone constitution is the biggest motivation for Kaya to learn medical ninjutsu.

Chopper is not very interested in becoming younger. He also feels that he looks too immature. If he looks more mature, he may be able to gain more trust from patients.

By learning medical ninjutsu and combining it with the knowledge of pharmacology, Chopper wants to save more patients, become a famous doctor and leave his name in history, so as not to bring shame to his human adoptive father.

Kaya's progress in learning medical ninjutsu is much faster than Chopper's. After five days of learning, she felt an extra power in her body, manipulated this new power, and learned the simplest medical ninjutsu - Palm Immortal Technique.

Tsunade was very satisfied with her second disciple's learning progress. Kaya had already mastered the basics of palm senjutsu, and she could use this medical ninjutsu to heal some small animals.

The principle of Palm Immortal Technique is to catalyze the activation of cells at the wound site, artificially speeding up the healing time of the wound. The larger the patient and the wound area, the greater the energy consumed.

With the energy accumulated in Kaya's body, she can only save a few rabbits a day at most. She needs to keep working hard. The Palm Fairy Technique is just the beginning, and there are more medical ninjutsu waiting to be learned.

As for Chopper, his learning progress was almost zero. He couldn't even do such a simple step as accumulating special energy in his body at the beginning. He never got the hang of it, leaving Tsunade with no solution.

Chopper watched Kaya become more and more proficient in the use of the Palm Magic. The more anxious he became, the less he could learn. His mental state became very bad, and he had to stay awake until the early morning every day.

Tsunade carefully examined Chopper's body and found that his meridians were not blocked. Chopper ate the most ordinary Human-Human Fruit (ordinary person form). Can't he be treated as a human being?

The strange doctor never thought that his mantle could not be passed on to animals. Is Chopper essentially still a deer, so he cannot absorb the energy of nature and lose the innate advantages of the human body?

Tonight, Chopper was comforted by Junior Sister Kaya again. He shrugged his head and thought he was useless. Although Teacher Tsunade did not force him to learn medical ninjutsu, he could still sense the teacher's disappointment.

Kaya no longer shows her palm magic in front of Chopper. The kind-hearted junior sister is afraid of irritating her senior brother and ruining their relationship, which would not benefit anyone.

Chopper returned to the room alone, closed the door and sat on the bed, thinking about his training experience these days, "It seems that there is only one way left, I must learn medical ninjutsu, I want to become the best doctor to help everyone, and help Luffy"!

Chopper has already read the newspaper about Ace's upcoming public execution. Time is running out and Xiaolu must learn medical ninjutsu as soon as possible, which will definitely be useful at the critical moment.

Even if they did not participate in the Battle of Marineford, Luffy and Ace must have had many wounds on their bodies when they left the Marine Headquarters, and they would need treatment from the best doctors. If they did not pay attention to their recovery, they would definitely suffer from hidden diseases in the future.

"Let's try our best. Only success is allowed, failure is not allowed." Chopper held the bag in his hand, which contained his latest Rumble Ball. He wanted to stimulate the potential of his brain through drugs and break through the intangible barrier in one fell swoop.

Chopper stared at the spread-out "Essence of Medical Ninjutsu", his hooves rubbing the bed board anxiously. Moonlight shone through the window lattice onto the pages. The complicated running routes were like tangled vines, making him so anxious that he kept shaking his blue nose.

He grabbed the blue ball from the bag, finally made up his mind, and swallowed the first medicine ball with his throat rolling. The bitterness was instantly replaced by a warm current.

Chopper gathered the power of the Rumble Ball in his head and activated brain enhancement. He felt like a fire was burning in his skull. His hooves pressed against his head unconsciously, and the bones under the fur made a slight crackling sound.

The stimulation from the strong medicine was indeed effective. His vision suddenly became extremely clear, the words on the pages seemed to come alive, and the meridian map unfolded in three dimensions in his mind, making it easier for Chopper to learn and comprehend.

"So there's something wrong here, no wonder the energy can't be circulated," Chopper excitedly poked the pages of the book with the tip of his hoof, his ears trembling with excitement.

The desire for knowledge overwhelmed his concern about the side effects of the Rumble Ball, so Chopper grabbed the second Rumble Ball and swallowed it without even chewing it.

Taking drugs to study is simply cheating. Chopper has become a little addicted. This state of rapid learning has great side effects, and they come quickly and violently.

Chopper was still immersed in the ocean of knowledge, but he didn't notice that his head circumference was getting wider and his head was a circle bigger than before.