We see the train standing in place after it was stop by whoever stopped the train back in the train station. Suddenly the roof of the train bursted open as Y/n leaps onto thr roof of the train and he leap backwards and he land on his feet as he ready his sword.

Kageyama climbs onto thr roof of the train and stare at Y/n as he summon shadow like hands to grab him and get the flute back but he dodges the shadow hands as he use his sword to cut them down as he dodges the shadows and then he rushes foward and goes for a kick but Kageyama dodges it and they get into a brawl as the two strike blows at each other.

Y/n moves quickly as he dodges Kageyama's swings and punches as he also dodges the incoming shadow like fists that comes out of the ground below him. However he was punched by one of them and he stumble backwards as Kageyama takes back the flute from Y/n's waist and takes it.

Kageyama: Got it!

Y/n: No!

He he throws his kunai's at Kageyama which he dodges as Y/n quickly vanished and appeared right in front of Kageyama as he kick him back and grab the flute but Kageyama will not let go.

Y/n: You have to let go! This flue is extremely dangerous! You'll kill a lot of people!

Kageyama: That's the point! We're going to show everyone not to mess with us!

He dodges his incoming kick and the two have a tug of war as they pull the flute back and foward towarding each other and it seems things became a stand still until there was a fire like explosion that sent Y/n off the train as Natsu burst out of the train yelling.

Natsu: THE TRAIN FINALLY STOPPED!

He gets off the train and turn to see Y/n getting up which he ask.

Natsu: Huh you got left behind on the train as well?

Y/n: Natsu we have to stop him before-!

Then the train begins to move with Kageyama still on and having the flute. The train moves away from them as Y/n quickly dashes over and leap over towards the train but Kageyama summons shadow like fist to get him off.

He cuts them all down very fast but before he could land onto the roof Kageyama runs up and kicks him away from the train.

He hits on the ground and rolled onto the tracks until he stops rolling and lays there as the train rides away with Kageyama on board with the flute.

Once the train is gone Y/n slowly sat up as he shake his head and goes to stand up but he felt a sudden pain at his leg as he realised he spring his leg when he land onto the ground.

Natsu: Yo Y/n you okay?!

Hi rushes over to him and helped him up.

Y/n: Yeah I'm okay. I just spring my leg.

Natsu: What just happened?

Y/n: I'll explain but we need to get back to the others.

However they don't have to as Erza, Lucy, Gray and Happy arrived with Erza riding a magical car that only needs magic to make it to move.

Once they arrived Y/n sat down and use his healing magic to heal his leg.

Natsu: (angry) I can't believe you all left me on the train!

Erza: I apologise for leaving you on the train. It will not happen again. (Turn to Y/n) You okay?

Y/n: Yeah. It's only a spring so my healing magic can easily heal it.

Happy: What happened?

Y/n: Someone else was on the train. A member from Eisenwald guild name Kageyama.

Erza: (shocked) You sure?!

Y/n: No doubt about it. (Gets up) What also fears me the most is what he has. He was delivering one of the most dangerous items ever called Lullaby.

Happy: Lullaby? That doesn't sound so bad.

Y/n: The name may sound friendly but i can ensure you it's not. Lullaby is a dark magic item that has the power to kill those who hear it play. It was one of Zeref's creatures from the book of Zeref.

Gray: (shocked) You serious?!

Lucy: But how can you possibly know that?

Y/n: I've researched it. But that's not important. What is important however is what Eisenwald is about to do with it. If I'm correct they are heading to Oshibana Town. If they use the flute apon hundreds or maybe thousands of people then all of them are going to die.

Erza: Then we need to hurry. Everyone climb inside, we need to get there before it's too late.

Natsu: Oh come on can we walk?

Gray: Let's go.

They climb inside and once on board Erza drives off to Oshibana Town.

(Later)

They artive at the town as Erza drive through the streets as fast as she could so thye can reach the station.

Gray: Erza slow down!

Erza: We can't allow Eisenwald to kill innocent lives.

Gray: But you'll drain so much of your magic!

Erza: I know bit we have to be there quick!

Inside Natsu feels like hell once again while Y/n seems distracted which Lucy called out to him.

Lucy: You okay?

Y/n: I have theb flute with me but I got it away from me. A lot of innocent people are going to die because of me.

Lucy: (smile) Hey don't beat yourself up with that, you tried your best right? Besides it's not over yet.

Y/n: Right. There is a chance to save lives.

Lucy: (smile) Yeah.

Y/n can't help but notice Happy looking like he is thinking about something which he ask him.

Y/n: What are you thinking?

Happy: I can't help but feel like I forget about something important.

Y/n: I'm sure you can figure something out. For now it seems we're close.

Happy: What makes you say that?

He points out the window and the two sees a crowd gathered around the train station with smoke pouring out within the train station as Erza Park the vehicle and they climb out. Lucy and Y/n carry the unconscious Natsu as they approaches the crowd of people.

Lucy: You think they are holding up here?

Y/n: No doubt about it. And it seems the magic council knights is here.

Erza goes up to one of them to ask them the situation but when they don't reply she headbutts them. She goes one by one, asking and headbutting them if they don't say anything.

Y/n: Isn't that a bit extreme?

Lucy: Just let her do hee thing.

Gray: Yeah I rather not get involve if I were you.

Y/n: Um Gray where is your shirt?

After Erza "ask" some questions they head inside and Erza explain what happened.

Erza: The Eisenwald guild are here. A few knights enter to take them down but they haven't come back.

Y/n: They may have gotten them.

Gray: Still they are trapped here right? There is no way they can complete their plan.

Y/n: I don't think so. See those speakers.

Gray: (Sees the speakers) Yeah what about them?

Y/n: Like I said before Lullaby kills those who can hear it. Why else is using the train stations speakers to a crowd of people outside.

Gray: So this is apart of their plan.

Y/n: I believe so.

They keep going and soon come across the fallen knights that lay on the ground ans staircases which shocked them to see. Still they keep moving until they reach the train platform and in front of them is all the members of Eisenwald guild starring back at him.

???: Welcome Fairy Tail, welcome to your death.

They look over to see theie leader standing on top of the lamppost and looking down at them.

Erza: Erigor.

Y/n: Stop this now Erigor! Stop this or you and your guild will go too far! There is innocents of people out there and going to kill them all!

Erigor: That's exactly what I'm going to do. Once we use the speakers around the train station then everyone will know our wrath and the magic council will pay for taking away assassin jobs from us.

Y/n: Killing innocents of is wrong! These people have nothing to do what the magic council has done.

Erigor: Doesn't matter. Everyone will know who they are dealing with and no one will not tell us what to do. Deal with them while I proceed with the plan.

He then vanishes into thin air just as Natsu begins to wake up and straighten himself up while Y/n tells Erza.

Y/n: Erza we have to stop Erigor from reaching the speakers.

Erza: Your right. Natsu, Gray head to the speaker room and stop Erigor.

They just glare each other that now they have to work together which Erza barks at them.

Erza: What did I say!

Natsu and Gray: Yes ma'am!

They run off while Y/n, Lucy, Happy and Erza turn to the rest od the Eisenwald members as Y/n pulls out his sword and gets into a battle stand.

Y/n: Ready Erza?

Erza: Yes. Let's do this.

She then summons her sword which surprised Lucy ad both Erza and Y/n ready with their blades as the Eisenwald guild members charges towards them.

Y/n vanishes and appears as he cuts them all down with one swing and with incredible speed he takes out a few more while Erza takes on the rest.

She strike them with her sword as she blocks the incoming strikes and dodges the swing and then she begin swapping weapons by using her requip magic as she takes on the group.

Y/n quickly moves fast as he cuts down the Eisenwald guild members as he takes them all on as he dodges and blocks their attacks.

He then exploded as fog covers them as they were quickly taking down within the fog.

One try blast him with magic but he dodges and he pinned him to the groud. He grab us head and he use his mind manipulation on him which mads him confuse as he gets off of him and looks over to see multiple Y/n's as soon the fog clears up.

In reality it was his own guild members as he charges towards him and fights them. Y/n sees this as he bend down with his blade in hand and he vanishes and then appeared behind them as a strong wind blows away from him as all collapses onto the ground.

He then rush over to Eisenwald and aid her to battle the rest od the Eisenwald guild members snd soon all were defeated which impresses Lucy and Happy.

Erza: I believe some got away. Lucy, happy see you can find them.

Lucy: Who me?

Erza: Just do it!

Lucy: (scared) Yes whatever you say ma'am! Don't want to make you angry!

The two head off and once they are gone Erza collapses on one knee which Y/n came over to her.

Y/n: You okay?

Erza: Yeah I'll be fine. Gray was right about me using too much magic on the magical vehicle.

Y/n: Maybe but we're here and that's good.

Erza nodes and Y/n turns but then Erza said.

Erza: I know who you really are.

His eyes widen in shock as he turn back to Erza who is looking at him as Erza goes on to say.

Erza: Your one od the most deadliest assassin ever who have killed a lot of innocent people. A cold-blooded killer who kills for your previous guild but now joining Fairy Tail. I wanna know why you decided to join Fairy Tail and why do you wish to help us?

Y/n is silent as he looks down in shame as he looks over to Erza and tells her.

Y/n: Because.....I wish to redeem myself for all the evil things I have done in the past.

To be continued..........................................................