Well, that was for when he actually reached the location of Earth's Core, as right now he was still far away from that.
Not to mention that he was in the middle of something, and he didn't have the time to ponder about something else.
It was precisely with such thoughts that he continued pounding the beauty in front of him, not caring in the least about the weird looks he got from the surroundings.
…
Eric went at it for another day, not stopping even for a moment to breathe as he released all of his anger on the beauty in his arms.
By this time the Butterfly Royal Guard, and his Beasts Division had completely subdued the Moth Army, despite their casualties.
It was a full swipe there was no Moth that managed to escape and also no Moth that could put up a resistance any longer.