Training

Inside the secret hideout of Ace, Sabo, and Luffy, Gjhin had shaken hands with all three brothers. "Hang on a second, let me go get the spare iron pipe." Ace said, leaving Sabo and Luffy behind with Gjhin.

The three of them stayed there and waited for Ace who returned before two minutes had even passed. An iron pipe that looked identical to the ones that the three brothers used was thrown at Gjhin who caught it. "Give it a swing." Ace told him.

Gjhin nodded, he gripped the iron pipe by one end and pointed the round part forward. The three brothers stepped back, allowing him to have a try with it. With the iron pipe in his hand, he felt that it was light in his hand.

Whoosh! Whoosh!

First, he swung it downward, then back up, left and right. He then tried swinging it in every direction and changed the trajectory slowly to get used to it. While he was doing this, Ace and Sabo seemed to realize something when watching him swing the pipe around. It seemed like Gjhin could fight before he lost his memories.

While he had no memory of it, his body remembered how to fight. It seemed like he didn't need any training before he went with them. Though, he wouldn't participate directly and only watch to see how the three of them worked together during the beginning.

When Gjhin finished giving it a swing, he stopped after a bit. He returned the iron pipe. He also felt strange, as he felt as though he had used a weapon in the past. It was strange, he was only about 10 years old, but he knew how to fight. It made him wonder what he had done in the past before he washed up on the beach that morning.

"Nice, we are going to go out for food later, do you want to come hunting with us, or stay here and get used to your Devil's Fruit power? It might be dangerous if you suddenly blank out in the middle of a battle." Sabo asked.

Thinking about it, Gjhin decided to stay, he felt a little strange at this moment and felt as though something may happen if he went with them.

"Alright, we'll be back soon." Ace nodded. The three brothers then quickly left the secret hideout and disappeared after hiding it from plain sight. Inside the hideout all alone, Gjhin tried to recall his memories.

He sat down with his arms crossed while closing his eyes and trying to think. A little while later, he couldn't recall anything no matter how much he tried. Since it was a pointless endeavor, he may as well try to discover what his Devil's Fruit power was.

With the iron pipe that hadn't been put away yet, Gjhin held it and started swinging it around, hoping that maybe something would happen. His body was small, but it was enough for him. He tried to swing the iron pipe around in his left hand, finding that he could use it just as well as his right hand.

With a quick stretch, he jumped into the air and swung the iron pipe while rotating his entire body all the way in 360 degrees. As he landed, he struck the air a few times, before he landed on his feet. He also tried swinging it around as fast as he could and threw it so that he could swap hands in the middle of rotation. When it was in the air, he punched forward with his fists or kicked the air.

While he was practicing, he suddenly had a headache. Dropping the iron pipe on the ground, he held his head and kneeled on both knees. "Arg!" he shouted internally. While holding onto his head, knowledge started appearing in his brain.

Soon, the headache stopped, allowing him to get up and process the information he gained. From what he filtered, he summarized it all. It was his Devil's Fruit ability, he had figured out what kind he had eaten during his hunger. which resulted in him drifting to the East Blue from wherever he was.

Basically, this was the information he found, Tokei Tokei no Mi (Stat Stat Fruit), which allows the user to improve any and all stats in their body. The percentage increase in stats depends on the user. To put it in simpler terms, he can increase his strength, speed or agility, wisdom or intelligence, defense, or vitality.

By invoking the powers of his Devil's Fruit, he could virtually make himself invincible if he was strong enough at that point. After learning of this, Gjhin tried to use his Devil's Fruit ability immediately.

Focusing first on his hands, Gjhin felt strange energy within his body slowly move to his hands, making his hands have a weird black line that ran across both the top and bottom of his arms. From this, it was obvious that the lines showed where he had increased his 'stats', making it easy for his opponent to tell after a while if they hadn't figured it out beforehand.

After a few seconds, the black lines disappeared, as his arms reverted to normal. It seemed like he needed to try again in order to master his Devil's Fruit. Focusing once again, energy moved into his arms, as a black line ran through his arms.

This time, it lasted a little bit longer before disappearing on its own. Gjhin repeated this process over and over and over again until he could finally do it for longer than a few minutes.