User blog comment:FairyRaven/Fairy Tail Chapter 372: Breach, Review and Commentary/@comment-4829046-20140221170751/@comment-7418318-20140221172116

I see a gray and black mass that wouldn't be recognizable as a heart without the context, but I guess that's still a lot further than most other manga go.

But this is still a little more recognizable, though the anime tops in terms of shock since there the heart lands on the chest of another guard and rolls down into his lap...