Eren's heart was pierced by a space-element dagger.
Eren looked down when he felt an unbelievable amount of pain in his chest. He could feel that the dagger had pierced about three inches into his heart. It would have completely pierced his chest and came out from the other end had it not been for the enhanced protection his cloak of lightning had granted him.
"Hahahahahahahahahaha!"
Claho let out a burst of cheerful laughter when he saw Eren's current condition. Within that joyous laughter, there was a feeling of relief mixed in.
The other rankers surrounding Eren also breathed a sigh of relief when they saw that the dagger had pierced Eren's heart. It should only be a matter of time before the guy drops dead on his own. There was no need to face his suicidal attacks anymore.