hello09 said:
I have read it.
Yes,this is why I say it's an effect of the curse. In a way,it is. He kills all he cherishes,so he must hate them to retain control of the curse's random death waves. He will end up killing what he cherishes intentionally instead.
However,it was made rather clear in chapter 450 that it has gone beyond reason. Zeref's mind itself has become contradictory,and if you remember the name of the curse,it seems like this is an intentional side effect. Not even Zeref realized that he went insane. He said he wanted to kill Natsu. That totally goes against his plans.
Because if he doesn´t honestly believe in in he would kill him on contact, however
if he decides to kill him honestly the curse won´t harm Natsu making it actually plausible to his plans.
Aka whatever Zeref says/ he means the opposite, (as long as the person is alive).
Apparently he seems to be capable of being indiferent about his country.
Meaning, he doesn´t intend to kill Acnologia, at least not openly.
Acnologias Breath kills through seperating body and soul.
A 1 hit kill technique,that is total, but in order to prevent Zeref´s curse from killing Acnologia first, he needs to attack him with killing intent.
I don´t know which role Mavis plays in that,but that should be his motivation to fight him.