Kazu and the others were in the battlefield. Dark king vanished as soon as Natsu's ash was scattered. Everyone was eased as the war was over and was sad too for the death of Natsu.

On the way back to Ishi's kingdom (the head kingdom :consist of 3 kingdoms)

"Natsu said something about seeing us again.. what does she meant by that!?", taichi asks Ishi. "You know  the previous lords or immortals are reborn after 8 generations , thatll be 800-900 years with a new life and memories after they die, so she meant that she will be reborn again.", Ishi explains as they travelled in horses on the way back.

Thousands of soldiers along with the soldiers of the golden knights and eagle rejoice as they go back to their homes. It was snowning and the soldiers had to camp in a valley for the night and set up tents and bonfires. Kazu was inside his tent and on the middle of the night he got up and took a flying charoit and was about to leave suddenly from his back , Ishi,Taichi and Dragon appeared and Ishi asked ,"Kazu bro, leaving so early??! dont be so hard on yourself, Natsu will be reborn again and as for us ,imortals, hundreds of years is just a blink away". Kazu does not reply but as he was about to take off they joined him in the chariot as Dragon continues," let us drop you till your castle! We have to see you dont do anything stupid". Kazu then replies in an angry tone ,"Stupid?? I had done the most stupid thing in my life by letting Natsu die!!". They remained silent for a while as the chariot crosses mountains of icy peaks.

They reached Lord blue's castle, which was at the foothill of a icy mountain . The castle was made of ice and a blue light shone in the icy castle. They reach the foothill and got off , some soldiers who was under Kazu came and greeted them . As they walked towards the gate a huge iron-like soldier stood firm, it was the guardian of  the castle and every lord had their own guardian for their own castle.

" I need you to leave!! This will be the last you will see of me till Lady light reborns again!", Kazu orders as he stops and covers the path. "Dont tell me you!!", Taichi shouts as Ishi continues ,"cursing yourself!?!!". Kazu does not reply but stares at them with his cold blue eyes. "I wont let you!!",Dragon shouts as a huge dragon appears from underground and attacks Kazu, But from the back the guardian of the castle covers him as kazu walks inside the castle  and shouts ,"Come in ! If you wanna get sealed too !," and walks in the entrance and sits on the ice throne and lifts up his hand. From the tip of his palm a blue cube of ice appears and rotates.

"Kazu!! Dont!! You have suffered enough!", Ishi shouts and rushing  with taichi inside the castle to stop him but, "Seal!', Kazu whispers as the cube starts to grow and consumes Kazu and starts to grow bigger consuming the whole castle as Ishi and Taichi rushes back .

Kazu stares at them as he thinks

Taichi!! Become stronger ..  im sorry guys i have no choice! Natsu.. i just cant live with the pain that your gone.. ill have to freeze my heart cause it hurts so bad! I hope to see you soon!..

The guardian of the castle freezes too as Dragon summons iron dragons to break the blue ice but not even a scratch laid on it. " Enough! DRagon! Kazu made his choice. Natsu meant to him more than we knew.. let us leave.. let time decide what will happened to him !! This seal lasts a thousand years!",Ishi orders as they leave.

Kazu thinks about Natsu and flashes back his memory when he first met Natsu , as the ice slowly freezes his beating heart!.

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