We see Natsu and Happy flying over the train tracks in hopes to catch up Erigor before it is too late.

Happy: You think we should wait up on the rest?

Natsu: They will catch up soon. Besides I wanna fight him.

Happy: I have a feeling you just wanted to fight Erigor.

Natsu: Yeah got a-

Suddenly there was a explosion of wind that nearly sent Happy and Natsu fly away but they hold themselves and they see and battle going on far from them as they see two figures going at each other.

Happy: It looks like Y/n beat us.

Natsu: I can see that. Well time to join him! Let's go!

Happy: Aye sir!

The two fly towards the battle all awhile we see Y/n quickly dodging Erigor's attacks him with his wind attack as he cost destruction to the tracks. Y/n quickly dodges his attacks and then Erigor came down fast ans swings his scythe at him but he dodgesing his quick swings before he clash blades.

Then Erigor quickly blasted Y/n with a powerful wind magic but he move out of the way and then he breaks free from the blade lock and then kick Erigor back as he stumble backwards.

Then fog appears surrounding Erigor but he just smirked and pushes the fog away with his wind but the fog returns the second he did it. Erigor has no choice but to fight him in the fog as he sees dark figures moving around within the fog. Appearing and disappearing as Erigor ready his scythe.

Then he immediately turn and lands a strike at Y/n as his  body was cut in half.

Erigor: (smirk) You can't beat me!

Then the split bodies turn into smoke and circle around Erigor confusion him and then Y/n appear behind him with his body attached as he dashes towards Erigor and kicks him.

Erigor stumble forward while Y/n does a back flip and throws his Kunai at him which he dodges but one knock hid scythe out of his hand and fall into the dark pits below.

He growl in frustration as he turn to Y/n while he ready his blade as the two stare at each other. Suddenly Natsu came out of the fog and fire punched Erigor in the face and sent him flying towards Y/n which he dodges as Erigor lands hard onto the ground.

Natsu: (smirk) What's up! Did I miss anything?

Y/n: Not really. You came just in time. Mind we deal with this together?

Natsu: (smirk) Always.

Erigor: (gets up and turning to them) You will die here! No one cannot stop me!

He then performed a storm mail which blasted Natsu, Happy and Y/n back but quickly he throws his Kunai tied up to a rope and throws it to thr ground and catches Natsus hand.

Y/n: Hold on!

He and Natsu then leap off the edge and fall but the rope catches them and they swing below the bridge and under the other side as Erigor turn and both Natsu and Y/n strikes a blow at Erigor.

Natsu blasted him with his dragon roar while Y/n immediately vanished and appear behind Erigor who is flying towards him as he ready his blade and when Erigor gets a bit closer he immediately turns around and land a few slashes as Erigor rolled onto the tracks and lays there as Y/n turn as Erigor slowly gets up.

Erigor: (angry) You will regret this!

Y/n: We won't allow you to kill masters of guilds. Your plans is ruined.

Erigor: Never!

He then blasted the two with a powerful wind magic but Y/n stabbed his sword onto the ground and make his stand as the wind continues to beat him.

Natsu struggled to stood his ground while Happy can only hold on to his scarf as Erigor continues blasting them with wind.

Then Y/n disappeared and reappear behind Erigor but he turn and blast him but he exploded with fog as the fog begins to surround him faster and faster.

Erigor sees this and then he slammed his foot and the whole tracks they were standing exploded into pieces as parks of the tracks begin to float due to the wind.

Y/n was at the bottom as he looks up to see Erigor flying above him as he then throws him with the parts of the tracks. Y/n quickly leaps across and land onto the first track and begins to jump track to track until he reaches Erigor and lands a strike at Erigor.

Erigor then begins to fall and then Natsu rushes towards him and leap up to the air as he finishes this with a iron fist which finishes him off as the punch sent him flying and fall into the darkness pits and disappeared from sight.

Y/n land behind Natsu as he puts away his sword while Natsu turn to him and smiled.

Natsu: (smile) That was awesome!

He lifted his hand up as Y/n look at it and then high five him.

Natsu: (smile) Nice work.

Y/n: (smile) Same to you.

Then Erza, Lucy and Gray arrived at the magical vehicle and once they arrived they came out and check on the three.

Erza: Where's Erigor?

Natsu: (smirk) We beat him. He won't bother anyone ever again.

Gray: That's good to hear.

Lucy: Yeah that guy was scary.

Erza: Still you both did well. I'm proud of you both.

He slammed Natsu's head for a hug which hugged and then she turn to Y/n as the two stare at each other and then she gently hugged him which surprised him as Erza then whisper.

Erza: (whisper) You've earned my trust Y/n. Thank you.

He is even more surprised but smiled as Erza let's go and Y/n can sense something and turn to see Lullaby. He goes over to pick it up when suddenly the magical vehicle sped by and Kageyama picks up Lullaby off the ground and drives away while the rest watch in shock.

Gray: (shocked) What the hell?! We saved his life and this is the thanks we get!

Natsu: Crap! We gonna go after him!

Erza: Right! Hurry everyone!

(Later)

They soon arrived at Clover Town and once there they begin to search for Kageyama. Soon they begin to split off to find him and we see Y/n in the forest searching for Kageyama when he can feel Lullaby's magic.

He can sense that he is getting stronger so he follows it. While following it he can't help but feel like Lullaby is whispering. It was fade whispers but he can tell its something not good.

He push away the bushes and arrives near the building where the guild master were at. He turn to the building and looking around when he immediately turn and draw out his sword as he makes eye contact with Kageyama who just arrived.

Y/n: Give up Kageyama. You know you will not succeed.

Kageyama: I've come this far, I won't back down.

The two of them stare at each other in silence as Kageyama thinks about using Lullaby on both Y/n and the guild masters. Killing two birds with one stone as he slowly pulls it out which Y/n sees but he stood his ground.

Soon Natsu and the rest arrived in the distances and seeing this and they were about to help when Y/n stare at them, telling them that he got this as he turn back to Kageyama and begin to tell him.

Y/n: Nothing will not change if you do this. Do you suspect things will change if you completed your mission? Sure your guild will make a point but if you do this then you be a murder. Imagine a life where you'll be hunted down not only by the magic Council but guild members who wanted revenge. This isn't what you want. You were dragged into this mess just like the rest so Erigor will not be weak.

Kageyama: How can you possibly know that?!

He turn back to the rest and after seeing that they can't hear him he turn to Kageyama and tells him.

Y/n: Because I too was force to do things that was good for the guild. Erigor may have told you he will change the rules for the good of the guild but really he's just selfish. He only thinks about himself and no one else. I know this because my previous master was like him. He kidnapped me as a baby and train me to be a powerful assassin. He force me to do things and all he said to me is that "I am doing good things for our guild." However I find that to be not true. I turn on him and his guild members and abandon them to search redemption. To my eyes your following the same way as I have. Being force to do things against a power hungry man who only cares about himself and who be willing to harm innocent people in hopes to succeed.

He takes a few steps towards Kageyama and soon gets in front of him as he goes on to say.

Y/n: It's not too late to stop all of this. You can still walk away and be free knowing that Erigor or anyone else will not control you. Change your path Kageyama and live in peace.

He lifted his hand towards Kageyama and a moment a silence later he hands Lullaby to Y/n and falls to his knees. Y/n walks back and looks at Lullaby on his hand as he then heard.

???: Good job Y/n.

He turn to see Makarov standing behind him.

Y/n: Master Makarov.

Makarov: (smile) You did well. I'm proud of you.

He smiled and bow just as Natsu and the rest came down and cheered as they saved the guild masters. Y/n looks at everyone smiling and he smiled as well and glad he had such an amazing guild.

Then suddenly purple electricity zaps Y/n as he begins to yell in pain while the rest stop and turn.

Erza: Y/n!

Lullaby: Pathetic humans! If Kageyama can't do it then I will!

Happy: (shocked) Did that flute just talked?!

Y/n immediately throws it as he stumble back being caught by Gray as the Lullaby Lute begins to change and grow and grow. Soon other guild masters rush out and they are horrified to see a gaint wooden demon appears behind the build as Lullaby have revealed its monster form as Y/n and the rest stare at Lullaby and seeing that this fight isn't over as Lullaby begins to let out a massive and loud roar.

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