User blog comment:FairyRaven/Fairy Tail Chapter 389: The Twin Dragons vs. The King of Hades, Review and Commentary/@comment-24467372-20140620102338/@comment-24467372-20140620103501

The attack failed though.So I wouldn't necessarily think it was an act that required "Forehead vein" level of retaliation...

And if the attack managed to hit,then yeah.

But Sting and Rogue were so out of place. They hardly knew anything about anyone besides Minerva,who was acting like a bitch at the time. And for a decent amount of time,she was their ally and she was acting like she liked being a part of Tartarus....

So them making that face and claiming such things seemed unnecessary. They could have said something cooler like;

"We won't let you pass" or something more suiting to the situation.