One Piece Buff System

Haruno coughed and apologized: "Sorry..." then Luffy said: "Ah! Old Pirate, can you give me some hints? I want to be stronger! I need to be a captain to order Ace, Sabo, and Haru!" Naguri looked at Luffy and asked: "A captain?" Luffy nodded and said: "Hay! Hey, say yes, pirate master!" The old man just answered: "Okay!" Sabo and Haruno said: "Eh? You're gonna accept?" Luffy happily grabbed Naguri's hand and said: "Yay! Then we start tomorrow!" Haruno and Sabo sighed while Luffy looked at where Ace was and asked: "Eh? Where's Ace?" Sabo looked at Luffy before looking at where Ace was and explained: "Ah, it's because..." Haruno cut him off by adding the phrase: "It's because he is Roger's son." Everyone looked at him stunned, then Sabo asked: "W-who... How did you know about it?" Haruno smiled and just looked at him. Luffy shouted: "Ehh!?! The pirate king is his father!?"

Sabo nodded and said: "Yes, but don't spread it around. He will think that it was me who said it to you... He's gonna kill me!" Luffy asked: "Why!?" Sabo then explained: "I don't know why, but he doesn't like Roger." Luffy innocently asked again: "But he's his father?" Sabo retorted: "So what?" Luffy was now stunned as he remembered what Sabo said to them on the day they made the oath... Then he said: "Ah... That's right... Your parents too..." Sabi said: "There are some times where the children don't like their parents." Luffy continued: "But... He was the pirate king, a legend!" Haruno continued: "I understand that you want to ask him about Roger, but please don't." Luffy looked deeply at Haruno and nodded while saying: "Okay, got it."

Haruno looked at Naguri and said: "You too, Marubi." Sabo and Luffy looked at Haruno and synchronized, saying: "Na-gu-ri!!!!" Haruno shouted: "Anyway!!! You can't ask him about it!" Naguri smiled and said: "Got it." They proceeded to walk toward their base. When they finally arrived, the end of the day was near. Ace was there, looking at the sky from their base's window. Haruno used his Akuma no Mi and teleported himself to the base. He was tired. Teleporting long distances was very tiring. When he left the portal, he immediately fell in his bed and slept. On the ground level, Sabo and Luffy were staring at Ace. Sabo finally added: "There he is, ah... Let's act normally." Luffy: "Yes." Sabo: "Don't say it..." Luffy: "It's okay! I won't say it! Don't worry!" They entered the base and Sabo acted casually: "Hey Ace! You came back early!" Luffy then casually added as well: "Hey Ace! I didn't know that Roger was your father!" Black lines formed on Sabo's head as he thought: 'I knew it!' He immediately attacked Luffy while saying: "Luffy! You idiot! I explained to you why you can't say it!" Ace stared at them before saying: "Luffy."

Luffy looked at him and said: "Oi!" Ace then asked: "Who told you that?" With a smile, Luffy said: "Haru! Na Ace! How was Roger?" Sabo shouted: "No!! You idiot!!" Luffy: "Let me go! I was just talking!" Ace calmly punched Luffy's and Sabo's head. He continued talking: "Don't say this name in my presence ever again!" That night, they fought each other until dawn while Haruno slept like a log. The next morning, Haruno discovered that everything was either destroyed or thrown on the floor so he started to organize it. He noticed Luffy, Ace, and Sabo were unconscious on the floor, piled on each other. They had hematomas all over themselves from their brawl.

After some time, they woke up. They looked at each other and with a 'hum!' turned to look to Haruno. Sensing the tense looks he was receiving, with cold sweat, he asked: "What happened?" Sabo and Luffy resumed to him what happened last night. Not knowing what to do, Haruno just said: "Well... Sorry?" Luffy angrily said: "I'm going to train! Bye!" and left the secret base. He then instantly turned back when Haruno said: "I'm gonna make breakfast." He finally left after breakfast. Haruno made his owl follow him to know where he was going. He remembered something from yesterday and asked Sabo: "Luffy is going to train with Naguri-san... Right?" Sabo nodded and continued eating breakfast.

A week later, Luffy still hadn't come back. Haruno knowing where Luffy was, he would visit him every day with breakfast, lunch, and dinner. After, once again, giving him breakfast, Haruno returned to their base. This week, Luffy wasn't the only one who improved. Every day, he would teleport to Naguri's house in the grey terminal. With the help of his [Akuma no Mi Training Speed Up.] he could now teleport great distances easily.

He was observing Ace and Sabo trying to run away from the tiger. Looking at the yellow sky and white snow, Haruno used the [Shared Vision] skill with the flying owl. He saw Luffy cutting a tree while Ace and Sabo were running away from the giant tiger after another failure. The tree that Luffy was cutting started to fall and it almost hit the fleeing Sabo and Ace. Haruno controlled the owl to make it land on Luffy's head and used his Akuma no Mi to open a portal on the Owl's forehead. He exclaimed: "Luffy! You almost hit them!"  Luffy smiled apologetically and rushed toward them saying: "I'm sorry! Are you okay? I'm sorry!" Sabo and Ace looked at him with confused expressions and shouted: "Luffy!" Luffy smiled and said: "Ace! Sabo! It's been a while! How are you doing?"

Sabo smiled while black lines were forming on his forehead. He said: "Well... We're okay... Somehow." Haruno's voice came from the owl saying: "Is that how you two act when you see your little brother after a week of absence?!?!" Ace and Sabo looked at the talking Owl before saying: "Haru!" Haruno smiled and expanded the portal, jumping into it. When he appeared, he looked at Naguri and said: "Naguri-san, let's go. You as well Luffy! And you two too! Come!" Luffy smiled while Sabo and Ace looked at him confused but they followed anyway. When they arrived at Naguri's house in the grey terminal, Haruno started to make tea when Luffy started talking with Sabo: "Hey Sabo! I will show you the results of my training! Gomu-Gomu no... Pistol!" Luffy's arm stretched... It hit Naguri's face! "Oh no," said Luffy while looking at Naguri. Sabo laughed and said: "Incredible! Last week you couldn't stretch that much!"

[Edited by Aaronji]