Need to be ready

"Hey Zack, where do you think we will end up next?" Luffy excitedly sat in front of Zack while covered in bandages, while eating his food.

"How could I know? But, if we are lucky then we might get a chance to go there." Zack spoke mysteriously while eating a chicken leg.

"Where? Where?" Luffy excitedly asked while others also looked at him.

Hearing his words, Zack smiled and asked.

"Do you remember when we first met and I told you that I will take you to a sea floating in the sky?"

"Did you?" Luffy tilted his head in confusion but the next moment, his eyes sparkled like jewels.

"Yes, yes, you told me that you will take me to Sky Island. Wow! Are we going to Sky Island next?"

"Seriously? An island in the sky. Is that even possible?" Zoro frowned as he didn't believe it that easily.

"Of course, it's impossible. How can there be an island in the sky?" Nami rolled her eyes and didn't believe his words.

"Miss Navigator, you are misinterpreting his words. He said the sea floating in the sky, not only an island. And, I have also heard some rumor about it."

"But, I didn't expect our Vice-Captain to know about the sky island." Robin looked at Zack with surprise in her eyes. As days went by she was getting more curious about Zack.

"Nami, let's go! Take us to the Sky Island." Luffy stood up with his bandaged body and shouted while raising his chicken leg.

"Ahh, Luffy, don't stand! Those bandages…" Chopper shouted as he rushed toward Luffy.

"Luffy, even if there is Sky Island, how are we supposed to go there? You should know that ship can't fly." Usopp tried to calm down Luffy as he asked.

"Argh! Usopp, you have changed." Luffy suddenly showed teary eyes as he stared at Usopp.

"What? Really? Usopp, what happened to you?" Chopper shouted in shock and rushed toward Usopp.

"Hey Luffy, what are you talking about?" Usopp's expression turned black as he shouted.

"Then, why aren't you excited about Sky Island? You are not the Usopp I know." Luffy shouted while picking out a booger from his nose.

"Ahh!" Usopp suddenly got a heart attack which shocked Chopper for a moment. He rushed in front of Luffy and showed a devastated expression on his face.

"I'm sorry, Luffy. I have changed. I no longer have that excitement. I lost the meaning of being a pirate."

His eyes started tearing up as he cried in Luffy's shoulder.

Suddenly, Luffy's expression got serious. He pats Usopp's head and showed a brilliant light behind his head as he spoke.

"Usopp, let's go to Sky Island and change you back to Usopp I know."

Hearing his words, Chopper's eyes widened as he asked.

"Would Usopp change after we go to Sky Island?"

Usopp's eyes also lit up as he shouted.

"Alright Luffy, let's go the Sky Island"

Then, the three of them hugged each other, putting their arms on each other's shoulders while shouting.

"Let's go to Sky Island!" "Let's go to Sky Island" "Let's go to Sky Island"

Seeing their entire act, Zack,vivi, Zoro, Sanji, Nami, and Robin froze and watched the entire act with disbelief on their faces.

Finally, Nami could no longer bear their banter so she raised her fist.

Bang! Bang! Bang!

"Shut up! Let Zack explain how can we go there."

Nami shouted at them and then gave a death glare to Zack.

"Ehh! Let me explain how we can go there first." Zack immediately spoke as soon as he saw that glare. He turned his eyes at Luffy and others as he continued.

" Well we have already visited a similar island who meet the qualifications of sky island but is not."

" You mean the heart island Vice captain " replied Robin

"Yes,But one we are about visit is a real one. First, there are two ways to go to Sky Island. The first way is much fast but has a risk of losing the entire crew. The second way is to wait until we reach the second half of the Grandline."

"Then, we can find a way to go to Sky Island but I don't know the second way properly. I only know the first way because this a secretive information."

Hearing his words, everyone rolled their eyes.

"Zack, you truly are weird. It is called secretive information because it is not supposed to be known by others but you knowing this information, how can it be called secretive?" Nami rolled her eyes together with the others and said.

"Ahem! That's because only a certain pirate group knows about this route. And, that pirate group's name is...."

When he said that, he showed a mysterious smile while pausing for a moment.

Gulp!

Everyone got excited as they wanted to know the name of that pirate group. Some of them already had a guess but since it was confirmed, they didn't say it.

Seeing their excited expressions, Zack finally revealed the name.

"Roger Pirates"

"Wow!"

Everyone including Luffy shouted in surprise. Although people like Nami, Sanji, and Robin had some guesses including Roger Pirates, they weren't sure.

Now hearing this information, it made their blood boil.

After all, that's the Roger Pirates. The crew that conquered the grandline.

"Zack, do you mean that Roger Pirates also went to Sky Island from this route?" Luffy couldn't hide his excitement as he asked.

Zack nodded his head.

"Yes, and it was exactly before they went to Laugh-tale. I am not sure if it has any connection but my guess is that there must be a poneglyph in the Sky Island."

"Really?" Robin got excited as she asked.

Zack shrugged his shoulders and said.

"Not sure but considering that Roger went to Sky Island after recruiting that man means he must have gone there to find a Poneglyph or maybe it could just be a coincidence."

Hearing his words, Robin's eyes dimmed a bit but she curiously asked.

"That man?"

Zack nodded his head and turned to Luffy.

"I have already told you that without Robin we can't reach Laugh-tale, right?"

Luffy nodded his head and so did the others. Robin was currently the most important member of the crew after Navigator and Captain.

Even his position as Vice-Captain was much less important than hers.

"Just like her, there was a man from the Wano Kingdom from the New World who has the ability to read the poneglyph. And, the location of Laugh-tale is hidden in those poneglyphs."

"Only after finding four red poneglyphs, we can find the exact location of Laugh-tale. Without that, even if we go around the world several times, we can never find this place."

Zack explained.

Hearing his words, Zoro couldn't help but ask.

"Is it really that hard?"

"Roger found Lodestar a long time ago even before he went to Laugh-tale. Only there he discovered the existence of Poneglyph and their importance."

"There are a lot of Poneglyph in this world, several of them contain information about the history of this world while four of them record a certain map."

"When you combine those maps together to find a location where all maps intersect at the same time, you will find the location of the Laugh-tale."

"But, that is easier said than done. Because right now, two of the road poneglyphs are at the hands of two emperors and one of them is in an elephant that is tens of thousands of meters tall and holds an entire kingdom on its back."

"As for the fourth poneglyph, we don't know much about it. If it was twenty years ago, it was in Fishman Island but it was later removed from there and only the man marked by flame knows about it."

"Even, I don't know much about him though I will continue to find out more about him in the future."

"Of course, none of that matters because at least three out of four poneglyphs are at New World. And, going to the New World without having strength is sending our heads."

"So, there isn't much to talk about that right now. Let's just focus on going to Sky Island."

Hearing his words, everyone including Luffy solemnly nodded their heads.

Although Luffy has grown a lot stronger with previous battles, after listening to Zack about his grandfather's strength, he was a bit cautious about putting his crew in danger.

"But, how should we go to Sky Island?" Nami curiously asked.

"Go to Jaya. There is a man who knows about Upward Current. If we want to go to Sky Island, we need to find the correct Upward Current."

"Whoa!"

Suddenly, the ship started moving left and right.

Nami dashed out of the room and the next moment, she screamed.

"Ahhhhh!"

Everyone rushed out of the room and saw a massive ship falling from the sky. And, several parts of it were falling as well.

"Everyone, hold tightly on the ship and try not to let it hit the ship."

Knowing how important Merry is to them, Zack instantly gave the order. He clenched his fist and it turned black.

'Sorry Garp for stealing your attack.'

He concentrated his power into his fist and threw a punch at a massive mast falling above them.

[Rundown Version- Mini Galaxy Impact]

When he used this attack, he subconsciously released his Conqueror Haki to strengthen his Armament Haki.

Unfortunately, he hadn't even learned how to control his Conqueror Haki, how could he use Advance Conqueror Haki?

Bang!

Thud! Thud! Thud! Thud!

Bang! Splash!

He managed to break the mast into pieces and the impact released after the punch threw them away from the ship.

But the more pieces of the ship fell over them.

"Shit! Everyone, help them get inside."

Zack's face turned green as he regretted using his new attack without even thinking about it. He just found it really cool so he just tried it.

But, he didn't expect it to fail and fail miserably.

"Hahaha! Zack, let me try."

[Second Gear]

Luffy instantly entered second gear and his blood started pumping heavily, releasing steam out of his body.

Whoosh!

He raised both of his fists above him and started punching at a supersonic speed.

[Gomu-Gomu No- Gattling]

Bang! Bang! Bang! Bang!

With a single attack, he managed to break all of those pieces into dust and wipe them away from their ship.

"Thank god, you were here, Luffy! I was sure that attack would work but didn't expect it to fail so miserably."

Zack heavily sighed a breath of relief when he saw Luffy's attack.

"By the way, what kind of attack was that? You seemed very confident about your own attack."

Zoro curiously asked.

Hearing his words, others also curiously stared at him.

He was embarrassed by his question. He didn't want to say that he was stealing this attack from Luffy's grandfather but he had no other choice.

"This is actually Luffy's grandfather's attack called 'Galaxy Impact'. It is a super strong attack capable of destroying an entire island. It's just that I thought using armament alone would be enough but I was clearly wrong."

"Wow! Is that even possible?"

Usopp's jaws dropped to the ground as he asked.

"A single fist can destroy an island? That sounds like a joke to me." Sanji also shook his head in disbelief.

Unlike others, he has seen the power of Germa so he didn't believe Garp's strength would be that much higher than others.

"Although I said the island-destroying attack, I didn't mean literally turning it into dust. What I mean is that he could launch an attack that was powerful enough to shatter everything on the island into dust, or split the island itself into piece."

"Of course, if he fights someone with a similar power level, then the island might get destroyed sooner. You have no idea just how powerful the top-level powerhouses are."

Zack was speechless by their remarks so he decided to explain it to them and correct their misunderstanding.

"I really want to get that strong." Hearing his grandpa's strength, Luffy clenched his fist and spoke in excitement.

"Me too! Only then I can stand at the top of the swordsmanship." Zoro also smiled and touched the hilt of his sword.

"Well, I am not losing to Moss Head so count me in." Sanji lit up his cigarette and spoke.

"Ahem! I am the brave warrior of the sea so obviously I can't lose to you guys." Usopp proudly raised his head and spoke.

"Really Usopp?" Chopper looked at Usopp with wide eyes and asked.

"Of course!" Usopp proudly nodded his head.

"You guys are too attached to strength." Nami couldn't help but sigh upon hearing their words.

"Well, they are the main fighters of our ship." Vivi chuckled.

"It seems like everyone is motivated for more training." Robin also gave out a smile as she spoke.

"Then, you guys should train harder. Luffy, you have been trained by your grandfather for ten years. Although he didn't impart you with any specific skill, your foundation for strength is extremely solid."

"So, you must try to learn Advance Armament and Advance Observation within the next two months."

"As for Zoro and Sanji, it's not that I am underestimating you guys. But, your own specialties are different."

"Zack, you don't have to sugarcoat things. Just tell us your plan." Zoro suddenly interrupted Zack's words and spoke with a serious expression.

He knew that Zack was indirectly telling Zoro that his talent wasn't as good as Luffy's. He was afraid of hurting Zoro's self-esteem but Zoro never cared about so-called talent.

He believed in hard work. Besides, is it wrong for his captain to be stronger than him?

"Alright! You should simply focus more on Armament and try to master Advance Armament Haki. Also, try to awaken Observation Haki and master it to a certain degree."

"As for Sanji, you need to do the exact opposite. You need to do the exact opposite which is to master Advance Observation Haki."

Suddenly, he paused for a moment and said.

"I have no idea how to specifically train Advance Armament Haki and Advance Observation Haki. But, I do know some little details. So, I will explain them right now."

"First, let's start with Observation Haki. Advance Observation Haki has several usages such as covering a massive distance Observation Haki. The second is peeking into the future."

"The third is listening to others' emotions and thoughts. The final form which is not exactly Observation Haki but seemed like the Observation Haki."

"This form is said to be something that a person is born with. It allows you to hear the voice of other creatures such as animals and even sea kings. Not only that, you can even hear the voice of the non-living things and understand it. Currently Luffy has or is near to have talent to awaken it."

"Sanji, you don't have to go that deep. I believe the first wouldn't be a problem for you. So, the real challenge would be the second usage which is seeing the future."

"As for emotions, you could give it a try but I believe it will take quite a long time to reach there."

After speaking, he looked at Sanji who nodded at him.

"The next is Advance Armament Haki. There are two stages of Advance Armament Haki. But before that, there is one more stage which is full body coating."

"It can only be done after gathering a massive amount of Haki. So, you must vigorously fight and train so that you can gather more and more Haki through battles."

"After that, you need to reach Advance Armament. The first stage is External Release. It is simply releasing Haki outside your body, forming an armor around you."

"This can not only defend you quite well but also make your attack much stronger. The next stage is Internal Destruction. This time, you need to guide your Armament Haki into your opponent's body."

"This way, you can use your Armament Haki to deal heavy damage to your opponent. For the opponents like Big Mom and Kaido, only Advance Armament Haki do any kind of damage to it."

After speaking, he looked at Zoro who similar to Sanji nodded at him.

Finally, Zack looked at Luffy and said.

"You need to master both. This is a really difficult task for you, not because of your talent but because of your character."

"To master both of them, you must remain calm and collected. I know this is extremely difficult for you but you are the captain. If you fail in the battle against our enemies, the crew will be destroyed and everyone's dream will fail."

"So, Captain, do your best!"

Zack knew that this was the best way to motivate his captain so he immediately used the emotional card.

Sure enough, as soon as he heard about the destruction of the crew and the ending of the crew's dream, his expression got serious.

He nodded his head and said.

"I will definitely master it."

Zack finally smiled and said.

"Actually, I know you would be able to master it. But, as I said before, I want to prevent tragedies. So, if you can master Advance Armament Haki and Advance Observation Haki before we reach New World, we can officially challenge the emperors."

"And, you know what that means, right? Defeating the emperor means we will be one step closer to you becoming King of the Pirates."

Hearing his words, a bright smile appeared on Luffy's face. He raised his hands and shouted.

"Yosh! I am going to train hard."

Finally, Zack turned his head at Usopp and said.

"You should continue with your Observation Haki training. But, also don't forget about Armament Haki. Because you are our Sniper. You have learn a wide variety of gunship and melee skill."

Zack turned his head at Chopper and said.

"You need to develop your Rumble Ball and continue Haki training. Try to control and transform your form without the use of rumble balls but also don't forget to train conqueror and your proper monster point in presences of others so they can help you control."

Finally, he turned his head toward three girls and spoke.

"As for the three of you, the training is simple as before."

"Humph! Are you underestimating us?" Nami raised her fist and snorted.

"Yeah, we can also do hard-core training." Vivi also nodded her head and spoke.

Robin didn't say anything but just continued to stare at him.

"Actually, you misunderstood me. Your training is the hardest because you three don't have proper physical training. Let's not talk about devil fruit, just to awaken Armament and observation Haki, you need to go through several years of physical training."

"I can shorten it through several training methods but even that would take a long time. So, don't worry about the other things just focus on your physical training. Once the base is ready we will try to incorporate devil fruits and weapons together."

"For now though, we need to go to Jaya Island before we head to Sky Island. So, let's determine our route, Nami!"