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In the recent manga chapters, Natsu is seen fighting Gray, from Natsu's side, he just wants to move forward to beat FT's enemies, and I understand that Gray received his magic to kill END, but exactly why does he have to kill END? Did they explain this and I missed the chapter?

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The premise of your question is wrong. He doesn't have to. He wanted to. He wanted to kill END, but he actually doesn't have to kill END.

Okay, let me explain what I mean by the statement above. Gray figured that Natsu is END. Does he have to kill Natsu? No. Natsu was perfectly human at that time, and as long as he is human and have control of himself, there would be no reason for him to kill Natsu. Besides, at that time the Spriggan 12 is yet to be eliminated. Obviously Spriggan 12 is a bigger threat than END that is clearly on his side. So, once again, he doesn't have to kill END (at least not at that time) and he certainly shouldn't either.

But, Gray wanted to kill END. This is the difference. He wanted to kill END, because END is one of the Demons of the Book of Zeref. Gray is obsessed with killing all of Zeref's demons (and eventually Zeref himself) because Deliora has killed his family and later his master, Ur. He is motivated by vengeance, and this desires blinded him about the fact that END is a nakama. This is proved by Erza managing to stop him by making him remember that no matter what, Natsu is still Natsu.

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I haven't been following FT for a while, so would have to look for a confirmation. But from the previous manga I infer it is because

END (Natsu) is one of Zeref's demons.

Gray has a very ugly history with Zeref's demons. One of them (Deliora?) destroyed his hometown, family etc. Then the closest replacement to a parent sacrificed themselves to save his life and seal the demon. He also learns his father was basically kept alive as a Zombie by the demons.

Then something curious happens.

  1. He gains the abilities to KILL demons
  2. He discoveres Zeref created all these powerful creatures to kill himself.

After learning the true identity of END as the last of Zeref's demons, Gray decides to kill him for his revenge (aka Sasuke Syndrome)

  • Thanks for verifying! I understood that but I just couldn't understand the logic behind it and thought I was missing something. – Stupid.Fat.Cat Oct 18 '16 at 3:05
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    @Stupid.Fat.Cat Its the same logic Sasuke used to destroy hidden leaf after Itachi's death. He can't save Itachi so destriy leaf. Similarly Gray can't save his family but he can destory Zeref's demons. Natsu is the strongest demon created by Zeref. – Arcane Oct 18 '16 at 4:25
  • @Stupid.Fat.Cat Hopefully Erza knocks some sense into him, and unlike Sasuke, He better actually listen and understand because he is not built to Hate like Sasuke is. – Ryan Oct 19 '16 at 15:47
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Gray is the only one that can kill END with his Ice Devil Slayer Magic as there are no other Devil Slayers known at the moment so there is a lot of pressure on Gray. On top of that, Gray's horrible history with Zeref's demons also contributes to his decision.

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Spoilers don't read it if you don't want to be spoiled. Forgive me if I'm wrong.

So just adding to arcane's answer.. apparently in the manga it is revealed that Natsu is in fact the end and that he's Zeref's brother but died so Zeref has kind of brought Natsu back to life by making him as one of his demons. He also has made Natsu's memories of his family and Zeref himself to be erased. Apparently, if Zeref dies then Natsu will die too due to their 'unusual bond'. I don't know if this is true or not. Now, since Gray is the only one to kill the end he plans to kill the book of demons that Zeref owns, which of course will kill Natsu along with it.

  • I edited it and put everything inside a spoiler tag. Also try to find factual evidence and link it if you find anything. Don't use only what you surmise. If you think you're wrong try to do some research to be more certain – Wouter Feb 27 '17 at 10:51

protected by Community Oct 18 at 16:26

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