You have been watching from the sidelines for a while and Robin is unwilling to leave with you. This changes things but it's not surprising as she is still onto the words other people told her. A curse, a demon. You're aware that trauma is not something that can be healed so easily.
Sanji, Ghin, and Usopp are badly injured from the earlier attacks. You watched Sanji getting thrown backward by Blueno.
"Sanji!!" you ran to his side to help him out. "Are you alright?? Can you stand??"
"Y-Yea. Don't worry about me, Arsene" Sanji groaned, struggling to get up.
"How stubborn," Blueno said.
He walked towards you but before he could, he was stopped by several hands. You turned to Robin who used her devil fruit.
"Stop it!! I won't run away. This should be enough" she reasoned.
"They're the ones who keep attacking me. I can't help it" Blueno replied.
"Then let's hurry up and leave," she urged him as she stopped her power.
Blueno turned around and walked away along with Robin while using his devil fruit powers for the door to appear.
"Hold it" you spoke up, stopping Robin. "It's okay to be scared, Robin-ah but let me remind you again. Running away from your problems will only arise more problems and more suffering for those around you. Plus Luffy and the others are on their way here and it is impossible to change their minds no matter how many times you push them away"
You haven't called her by that in a long time and it surprised Robin. "So believe in Luffy. I know . . . that's where you will feel you truly belong" You smiled.
Robin's eyes widened in shock. You turned to Blueno. "You guys can go first. I'll hold them back"
Blueno stared for a moment then gave a small nod before walking through the door.
"Wait, Robin . . ." Sanji called out.
"It's no use. Nico Robin will not break the agreement" Blueno turned his attention to Sanji.
"How can you say that??"
He then explained Robin's past to you even though you knew it from Robin herself. Sanji was seething in anger and got up to charge at Blueno but you grabbed him by the back collar, holding him back.
"Hold it, Sanji!! Don't do something so reckless!! I know you were mad when you heard this but please restrain yourself!! We'll deal with them later once we reach Enies Lobby!!" you exclaimed.
"But-!!" Sanji turned to you and was about to retort but stopped when he saw the pleading look in your eyes.
You turned back to Blueno. "Go. We will deal with you properly when we reach there"
Without saying a word, Blueno walked through the door as it disappeared. Sanji cursed under his breath for letting Robin away and at the World Government.
"Don't beat yourself up, Sanji. You and the others need to save your strength to beat them at Enies Lobby. For now, I'll patch up your wounds" you assured him. "Also, don't forget I have a backup plan made in advance so rest assured"
With Robin, Franky, and CP9.
"Hurry up and sit down, Nico Robin. We'll soon arrive in Enies Lobby" Lucci informed.
Robin didn't say anything and walked to her seat. Franky followed after her, telling her to wait.
"Is it okay to let those two be in the same car??" Kalifa asked.
"It won't be too long before we get there. What could happen?? We're not gonna let them escape anymore. They are criminals who will be executed shortly. Let them grieve over their fate as much as they can"
____________________________________________________________
Meanwhile with Rocketman~
Luffy tried to attack the frog that derailed the train but got slammed backward. Inside, everyone got shaken up by the disturbance coming from outside.
"What on earth is going on with the sea train??" Paulie wondered and turned to the others. "Hey, are you guys okay??"
Everyone doesn't seem to be okay and Zambai noticed that his King Bulls have disappeared along with the rest of the Franky Family.
"Well, it's probably us who disappeared. We probably got derailed" Paulie said.
"Woah, that's worse!!"
"What're we gonna do?!" Chopper panicked.
Meanwhile with the Franky Family~
"Hello!!"
"Straw hat!! Rocketman!!"
"Do you see them?!"
"No, I don't. That damn huge frog!! Where did he send Straw Hat and the others flying?!"
"Hey, guys!! Look ahead!!" one of the members put on his binoculars. "I've found more detached cars!! Whether they're a friend or a foe is unknown. Everyone, prepare for battle!!"
Everyone grabbed their weapons and prepared to fight whatever was up ahead. However, upon closer examination, they spotted you without your mask.
"That's . . .(First Name)!!"
With Robin and Franky~
"I-Is it. . . true?!" Franky asked in shock.
"Yeah, so I was told"
Franky was relieved by the news that Iceburg was alive. "At any rate, the government has now successfully obtained the two keys. Me, who owns the blueprints, and you, who can revive the existing weapon. When that power appears in this world, the government will naturally end this pirate era. After that, this military power will become too much to handle and will shake the world to its core and destroy it. The ancient weapon is that much of a threat. Our master didn't lay down his life protecting the blueprints for such a stupid future!!"
Franky clenched his fists and continued. "So, even if I could escape, it's pointless if it's just me alone. You too, somehow, go back to Straw hat!!"
"That's not possible" Robin denied. "I hurt them just by being with them"
'Even (First Name). She will get herself in trouble with the government if she continues to help me'
Franky looked at Robin in silence then looked ahead. "It's not you who hurts them, is it?? The people from the government say that your existence is a sin, but no matter what weapons you're carrying, your being there isn't a sin. So . . .No!! Your existence isn't a sin!! And I'm sure (First Name) will tell you the same thing. Isn't that right . . .(First Name)??" his frown slowly turned into a grin.
Robin's eyes widened in shock. "What . . .?"
"Yep, you said it, Franky. Did you hear everything as well, guys??" you spoke up from the comm.
"Loud and clear, (First Name)-koi" Sanji joined in. "As she said earlier, have faith in Luffy and we will save you, Robin"
"You're not a demon or an existence that is cursed for living. It's not your fault for being born. Being alive and for who you are is never wrong. There must be a purpose in your life, right?" Ghin added.
"And there is one last thing I wanted to say to you back at the car, and that is a pirate isn't allowed to leave their crew without their captain's permission" Usopp joined.
"Robin!! No matter what you do to push us away . . . you will always be our friend and we will not leave you behind to be executed!!" Nami shouted.
"We'll be on our way once we get back on track. We just got derailed a while ago but we'll be okay" Paulie said.
You hummed and apologized to Robin. "Sorry, Robin-ah but we'll have to leave you out of the plan as there is a risk that you might blow it or that the other members of CP9 would notice that something is off so its best to leave you in the dark for now"
Robin didn't say anything but was in a shocked daze. 'When did she . . .??'
You grinned and told them to gather around. "And don't worry about us. We were found by the Franky Family and are on our way to Enies Lobby so here's what we have to do for now . . ."
_______________________________________________________________
Flashback~
"Here," you handed the comms to Franky and Usopp. "Since you decided to help us out, it would be wise to give you the comms first to communicate when we're separated"
"Ooo~ so these are the things that eyebrow was using earlier," Franky remarked while examining the small device in his hand.
"Don't even think about calling Luffy because he doesn't have it. He was borrowing Nami's comm earlier" you warned.
Once they placed it in their ears, you said, "Okay, guys. While we have the plan to save Robin, there may be a chance that it will fail because of CP9's strength as it is not something to scoff at. I can't interfere in the fight because of my circumstance and I'm already at risk of being involved with the government. That's why there must be a backup plan in case the first one fails"
They nodded in understanding. "And whatever you do, don't let them get a whiff of this" you warned and they replied with a nod.