Quote Originally Posted by Afro Thunda View Post
No reaction at all. There's a reason why there's no Black Dragon Slayer. That's because the Black Dragon could give two shits about a human.
I wonder about that, I've been thinking if there is then it would be Zeref.

Zeref and Acnologia have some sort of connection, we don't know what kind of relationship they have but we know Zeref can summon him and he seems to know a bit about him.

The only thing is Zeref is sh*t scared of him and like you said acnologia thinks of humans as nothing more than cockroaches.