User blog comment:FairyRaven/Fairy Tail Chapter 392: You Must Not Forget, Review and Commentary/@comment-7418318-20140711094725

What I call bullshit on is Gray knowing that Silver was really his father.

He didn't just knock Silver out, he gave him a wound that is fatal! Actually Silver should have been instantly dead, since that big hole in his chest would damage both lungs and shred his heart, not to mention the windpipe and spine.

And we are supposed to believe that Gray practically killed Silver even though he knew he was his father?

Now if he had punched this steel ball through Silver's guts (we've seen Gray himself and Pantherlily survive similar holes around there) I could believe it, but like this? No Way!

I hope Mashima has a very good reason why Silver would do something so cruel to Gray, since I really can't see any good motive for him to do so. It's not like Gray gained anything from this fight other than the guilty conscious of having killed his father. At the very least I hope that Silver wasn't under his own control when he did all this.