Sage: \"Now am only gonna tell you guys this once you either leave right now or am gonna have you beat you to near death, it's you choice.\" Porchemy: \"You got quite a mouth on for a little brat.\" Sage: \"I am not a little brat am 10 years old (shows him with his all 10 of his fingers wide open) you see\"
Porchemy: \"Your still a brat and now that you're here trying to defend your brother means that you know Ace as well don't you.\" Sage: \"Ace? So what if I do what's Ace got to do with any of you guys.\" Thug 1: \"That brat stole from money that belongs to the captain Bluejam.\" Porchemy: \"You better talk or else ( Grabs his sword) it won't end to well for you.\"
Sage: \"Yeah I know Ace, you think you can make me tell you where he is, well good luck with that I don't give up my friends that easily, I'll rather die than do that you bastard, so let's get this over with.\" Thug 2: \"You brat, you have no idea who your provoking here.\" Sage: \"Yeah, and I don't really care.\"
[There's four thugs not including Porchemy]
Sage rushes to the closes thug and throws a fist at his chest. Sage sends the thug goes flying into a tree and ends up knocking at the thug on impact. The other thugs and Porchemy have a look of shock and amazement at seeing their ally send flying by the strength of a ten year old kid like Sage. Sage then proceeds to go after Porchemy, since he wants to finish him off next. He knows that he's the strongest of the group and wants to remove the head of the snake first before destroying the body.
Porchemy reacts and attempts to hit Sage with his sword by doing a cross slash, but Sage notices what he's trying to do and dodges the attack. Porchemy then tries again, but this time he mixes in vertical, horzantial, cross slashes. He starts to get frustrated seeing that all his attempts have ended up being fruitless because Sage just keeps on dodging them like he knows that their coming and doges then just before they hit him, leaving Porchemy in a helpless situation.
Now If Garp were to see Sage right now he would be shocked because he would be able to tell that Sage is currently using observation haki. Even though it is the lowest level of observation haki the beginner level. He would be shocked because he knows for a fact that he has not told Sage about haki much less taught him how to use it, so with this he would be able to tell that Sage is a monster in haki, being able to learn observation haki not only on his own but only when he's at the age of 10. Imagine if he had an instructor that could teach him how to use haki.
[Let's go see what Ace, Sabo, and Luffy think of the fight]
Sabo: \"Oi Ace are you sure this guys is Luffy's older brother.\" Ace: \"Yeah they are, but I can't believe it their so different.\" Sabo: \"I know I don't think me and you could beat him up even if we teamed up on him.\" Ace: \"Yeah, I know I can see for myself that he's beating those guys without even trying.\" Sabo: \"Yeah just look at him, he's dodging all those attacks without even trying how is that even possible.\" Ace: \"I got no clue man.\"
Luffy is currently tied to a tree watching his brother get attacked by a group of thugs and a pirate, but he wasn't worried because he knew that Sage wasn't weak at all. One time when they were in the forest he was getting chased by a tiger that came out of nowhere. He thought that he was gonna die, but then out of nowhere his brother came and hit the tiger right in the face and sent him flying straight into the side of a hill. If Ace and Sabo would have seen this tiger they would have recognized it as the lord tiger, the Strongest beast on dawn island. But he was shocked when he saw his brother dodging all those attacks like it was nothing.
Luffy: 'Am so gonna make him teach how he's dodging all those attacks.'
Together at the same time in their heads, they swore that they would become strong enough to beat Sage, so they wouldn't be forced to hid or be so helpless in front ever again. Sage though had no clue what was happening right now, but for some reason he felt a bit a sweat start to form on his back like some kind of promotion. In the end though he was to busy focusing on the battle against the pirate.
For some reason he could feel his senses becoming stronger while in battle against the pirate. His senses were becoming much stronger faster then when he would usually be meditating and he was making full use of it to increase his senses even more. At the beginning he had to focus to be able to dodge Porchemy's attacks, but as the battle continued to progress he closed his eyes.
Sabo: \"What the hell why's he closing his eyes.\" Ace: \"I don't know, but I get feeling that he didn't close his eyes because he wants to die.\" Porchemy: 'Did this brat really just close his eyes when facing me' \"You brat you really are underestimating me, I will make sure you die a painful death for this.\" Luffy: \"NII-CHAN WHAT ARE YOU DOING OPEN YOUR EYES OR YOUR GONNA GET HIT!!!\"
Luffy screamed at the top of his lungs to get his older brother to open his eyes, but Sage right now didn't hear any of this, he was focused on using this battle to sharpen his instincts to the best of his ability. Porchemy: \"hehe stupid brat now DIE!!!\" Luffy: \"NII-CHAN!!! \"
To everyone's surprise [not really] Sage actually dodged the slash. Everyone: \"NANI!!! \" Sabo: \"What he actually dodged that.\" Ace: \"I knew that there was something different about him.\" Sabo: \"Ace is that really Luffy's older brother cause I don't see how's that possible.\" Ace: \"Yeah that is am sure of it.\"
[Lets go to Luffy]
When Luffy saw that his brother hadn't opened his eyes he started to cry cause he thought that Sage was gonna end up being cut in half but when he saw his brother dodge the attack and then do it again his eyes changed from mosity to stars. Luffy: \"Sugoi/Amazing nii-chan how are you doing that.\" Luffy tried to ask his older brother, but Sage just ignored him since he was kinda preoccupied at the moment.
[Lets go to Sage's point of view]
Sage: 'This fight really ended helping me out, but it seems that am not improving anymore. It's time to finish these guys off and untie Luffy and talk to Ace about that other guy who's next to him.' With that Sage suddenly opens up his eyes dodges Porchemy's slash one last time before grabbing his right wrist and throwing him over his body right into a tree. It wasn't enough to knock him out since he stood up pretty fast, but you could see that he good injured from that attack and lost his grip over his sword.
Sage rushed at him and punched him in the stomach, bringing him to a knee before roundhouse kicking him straight in the face and knocking him out. Sage then rushed off to the other three thugs that were still stunned to believe what just happened in front of them. They just saw a ten year old kid knock out one of their friends in one hit and then he dodged all of Porchemy's attacks without even trying. Not to mention that he closed his eyes in the middle of his fight against Porchemy.
It was easy for Sage to knock them out with a single well placed fist to their faces.
Sage: \"Alright then that's that. Oi Luffy you okay they didn't hurt ya to bad did they.\" Luffy: \"No Sage-niichan am fine, but how did you do that.\" Sage: \"What do you mean, do what? \" Luffy: \"You know how did you dodge all those attacks from that big guy you closed your eyes while fighting him, but don't worry I knew you were going to be fine.\"
Sage: \"Sure you did\" ( He says with sarcasm in his voice) Luffy: \"What you don't believe me.\" Sage: No no I believe you don't worry.\" ' I definitely didn't hear him yell out NII-CHAN open your eyes but whatever' Sage: \"Anyways why are you tied up against a tree.\" Luffy: \"Oh I am not sure either, but for some reason Ace tied me up along with that kid with yellow hair.\" when Ace and Sabo heard this they both thought: 'SHIT'
Sage: \"Oh really alright then, Ace get out here I know your in those bushes and you too whatever your name is.\" (Ace and Sabo come out of the bushes) \"So mind explaining why you guys tied up my kid brother against a tree.\"
Ace and Sabo explain why they tied up Luffy against a tree. Sage: \"Oh I see understand then. Ace and Sabo: 'Phh I thought he was gonna beat us up' (Sage then hits them both in the head leaving a bump to come out) Ace: \"Ow what was that for.\" Sage: \"That's for tying up Luffy and thinking that you can throw him into the river. Anyways you what's your name.\" Sabo: (Holding his head where Sage hit him) \"My names Sabo.\" Sage:\" Nice to meet you Sabo, my names Monkey D Sage and this is my little brother Monkey D Luffy. Luffy say hi\"
Luffy: \"Yo\"
Sage: \"Now that that's settled tell me why their were pirates coming after you guys. The big guy said that you stole something from them.\" Luffy: \"Oh they stole money from them.\" Sage: \"Oh and why did you guys steal money from pirates are you dumb or something.\" Ace: \"What no were not dumb, say it again and I'll beat you up.\" Sabo: \"Ace calm down will ya and we didn't mean to steal from them Ace didn't know they were pirates when he stole from them.\" Ace: \"Tsk fine.\"
Luffy: \"Oh they stole that money and added it to their pirate savings.\" Sage: \"OH you guys want to be pirates too.\" Ace and Sabo: \"Yeah.\" Sage: \"Alright then but let's leave this place I'll rather not have to beat these guys up again since I already beat them up once.\" Ace: \"Were not going anywhere we gotta move our treasure.\" Sabo: \"Yeah you can go ahead and leave if you want, but we gotta move our treasure first.\" Luffy: \"Am gonna stay and help. \"
Ace: \"Wait Luffy why didn't you tell them where the treasure was, if Sage didn't come in time then they would have tortured you so that you would spill the beans.\" Luffy: \"Beans?\" Sage: \"Information.\" Luffy: \"Oh that's because I thought that if I told then you wouldn't want to be my friend.\" Ace: \"Why do you want to be me friend so badly.\" Luffy: \"That's because aside from my brother I got no one else, I don't like the bandits or Dandan.\" Ace: \"What about your other family.\"
Luffy: \"I only have Sage and my grandpa.\" Ace: \"So your pretty much on your own.\" Luffy: \"Yeah I only got Sage-nii chan with me while gramps is usually not here with us.\" Ace: \"Do you want me to live?\" Luffy: \"What of course I do.\" Sage: \"Yeah so do I what type of question is that Ace.\"
Ace for the first time in his life is happy to be alive and have friends other then Sabo. Sage: \"Alright then since Luffy's gonna stay then I'll help you guys move your treasure and then me and Luffy can start to put our money in there as well.\" Luffy: \"Yeah lets do that come on let's go and move the treasure.\" Sabo: \"Alright let's go. Ace: Yeah I guess that's fine.\"
[Now I don't remember when the next time Garp comes and visits so am just gonna skip to that point they would have done the normal stuff like go steal in Grey terminal, train together. The only big difference would be that Sage joined Ace Luffy and Sabo in their brotherhood]