User blog comment:B214/Chapter 503: The Last Sight Seen/@comment-5303512-20160926122648/@comment-1359322-20160928152311

This is your biggest issue here:

"Of course he wouldn't bother to finish Dimaria, because it serves no purpose or that he had no time to finish before the demon took over and left to go kill Zeref"

We don't even know what happened, it's off-screen for apple sake yet you're saying that this happen, that happen. This is just you pushing your delusions or ideas on unknown events and saying things like "Oh Natsu was taken over by his demon self before he left". Do you have any actual evidence or any panels anything to back that your claim is true? No you don't, so you're just speculating, actually at this point you're no longer speculating at all, you're pushing your speculations towards people and claim that it happened.

Here are the facts that we know happen in this chapter.
 * 1) Fact is Dimaria is alive.
 * 2) Fact is Natsu rescued Lucy.
 * 3) Fact is Natsu obtain something related to his Demon-self/power.
 * 4) Fact is we still don't know what it is.
 * 5) Fact is Natsu can still recognize Gray.

What's not a fact yet from your points are:
 * 1) Natsu becoming wrathful, hateful and violent out of no where. Reason: Natsu didn't attack Gray, how is that "violent out of no where", if he truly became violent, he would attack anyone regardless of who it is.
 * 2) no reason to kill anyone besides Zeref, it could be that they are so beneath him that they are just a waste of time for him. Reason: Natsu didn't ignore Gray. Gray isn't Zeref and if it's like you said "they are just a waste of time for him", why even bother stopping and call Gray's name.
 * 3) The way Natsu is now, he is obviously showing some sort of resentment towards Zeref. Reason: Natsu is just searching for Zeref. We don't even know what state of mind he's actually in, it's only one/two panels only. If one/two panels can decide everything, Gajeel, Mira and Juvia would be dead already. We would've known everything about Larcade's magic already.

Do you understand now? You're grasping at straws here, pushing in your thoughts as what is happening. In the end what happened in this chapter that we can be sure of is Natsu beating Dimaria off-screen, and we only got a brief glimpse on Natsu or maybe you would prefer E.N.D. The information is scarce here, yet somehow you're acting as if you've seen everything already. Just stop it will you.

Or unless you're saying that you actually have concrete evidence to prove to everyone that Natsu left Lucy after beating Dimaria "before letting the demon take hold". You have actual concrete evidence that can show that Natsu has become "wrathful, hateful and violent out of no where" and is currently "showing resentment towards Zeref". And you have concrete evidence that "they are so beneath him that they are just a waste of time for him".